[lldb][NFCI] Remove unused LanguageType parameters

These parameters are unused in these methods, and some of them only had a
LanguageType parameter to pipe to other methods that don't use it
either.
diff --git a/lldb/source/Plugins/DynamicLoader/Hexagon-DYLD/DynamicLoaderHexagonDYLD.cpp b/lldb/source/Plugins/DynamicLoader/Hexagon-DYLD/DynamicLoaderHexagonDYLD.cpp
index 8595053..4e227ab 100644
--- a/lldb/source/Plugins/DynamicLoader/Hexagon-DYLD/DynamicLoaderHexagonDYLD.cpp
+++ b/lldb/source/Plugins/DynamicLoader/Hexagon-DYLD/DynamicLoaderHexagonDYLD.cpp
@@ -418,8 +418,8 @@
   if (sym == nullptr || !sym->IsTrampoline())
     return thread_plan_sp;
 
-  const ConstString sym_name = sym->GetMangled().GetName(
-      lldb::eLanguageTypeUnknown, Mangled::ePreferMangled);
+  const ConstString sym_name =
+      sym->GetMangled().GetName(Mangled::ePreferMangled);
   if (!sym_name)
     return thread_plan_sp;
 
diff --git a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp
index 4940564..20c60a4 100644
--- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp
+++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp
@@ -839,8 +839,8 @@
     std::vector<Address> addresses;
 
     if (current_symbol->IsTrampoline()) {
-      ConstString trampoline_name = current_symbol->GetMangled().GetName(
-          current_symbol->GetLanguage(), Mangled::ePreferMangled);
+      ConstString trampoline_name =
+          current_symbol->GetMangled().GetName(Mangled::ePreferMangled);
 
       if (trampoline_name) {
         const ModuleList &images = target_sp->GetImages();
@@ -981,8 +981,8 @@
 void DynamicLoaderDarwin::FindEquivalentSymbols(
     lldb_private::Symbol *original_symbol, lldb_private::ModuleList &images,
     lldb_private::SymbolContextList &equivalent_symbols) {
-  ConstString trampoline_name = original_symbol->GetMangled().GetName(
-      original_symbol->GetLanguage(), Mangled::ePreferMangled);
+  ConstString trampoline_name =
+      original_symbol->GetMangled().GetName(Mangled::ePreferMangled);
   if (!trampoline_name)
     return;
 
diff --git a/lldb/source/Plugins/InstrumentationRuntime/TSan/InstrumentationRuntimeTSan.cpp b/lldb/source/Plugins/InstrumentationRuntime/TSan/InstrumentationRuntimeTSan.cpp
index 2f93b51..f8e0374 100644
--- a/lldb/source/Plugins/InstrumentationRuntime/TSan/InstrumentationRuntimeTSan.cpp
+++ b/lldb/source/Plugins/InstrumentationRuntime/TSan/InstrumentationRuntimeTSan.cpp
@@ -564,8 +564,7 @@
   if (!symbol)
     return;
 
-  ConstString sym_name = symbol->GetMangled().GetName(
-      lldb::eLanguageTypeUnknown, Mangled::ePreferMangled);
+  ConstString sym_name = symbol->GetMangled().GetName(Mangled::ePreferMangled);
 
   ModuleSP module = symbol->CalculateSymbolContextModule();
   if (!module)
diff --git a/lldb/source/Plugins/Language/ObjC/Cocoa.cpp b/lldb/source/Plugins/Language/ObjC/Cocoa.cpp
index e3b4f65..67e11ae 100644
--- a/lldb/source/Plugins/Language/ObjC/Cocoa.cpp
+++ b/lldb/source/Plugins/Language/ObjC/Cocoa.cpp
@@ -902,8 +902,7 @@
   if (class_name.IsEmpty())
     return false;
 
-  if (ConstString cs =
-          Mangled(class_name).GetDemangledName(lldb::eLanguageTypeUnknown))
+  if (ConstString cs = Mangled(class_name).GetDemangledName())
     class_name = cs;
 
   stream.Printf("%s", class_name.AsCString("<unknown class>"));
diff --git a/lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp b/lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
index ee7ce24..eed1fb7 100644
--- a/lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
+++ b/lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp
@@ -72,9 +72,7 @@
         Symbol *symbol = sc.symbol;
         if (symbol != nullptr) {
           const char *name =
-              symbol->GetMangled()
-                  .GetDemangledName(lldb::eLanguageTypeC_plus_plus)
-                  .AsCString();
+              symbol->GetMangled().GetDemangledName().AsCString();
           if (name && strstr(name, vtable_demangled_prefix) == name) {
             Log *log(
                 lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT));
@@ -357,8 +355,7 @@
 
       Mangled mangled(name);
       if (mangled.GuessLanguage() == lldb::eLanguageTypeC_plus_plus) {
-        ConstString demangled(
-            mangled.GetDisplayDemangledName(lldb::eLanguageTypeC_plus_plus));
+        ConstString demangled(mangled.GetDisplayDemangledName());
         demangled_any = true;
         result.AppendMessageWithFormat("%s ---> %s\n", entry.c_str(),
                                        demangled.GetCString());
diff --git a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
index f5bca5b..e4c6c47 100644
--- a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -2230,8 +2230,7 @@
       if (!mangled_name.empty())
         mangled.SetMangledName(ConstString((mangled_name + suffix).str()));
 
-      ConstString demangled =
-          mangled.GetDemangledName(lldb::eLanguageTypeUnknown);
+      ConstString demangled = mangled.GetDemangledName();
       llvm::StringRef demangled_name = demangled.GetStringRef();
       if (!demangled_name.empty())
         mangled.SetDemangledName(ConstString((demangled_name + suffix).str()));
diff --git a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
index 6bf0e0f..f6e8c60f 100644
--- a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
+++ b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
@@ -3902,10 +3902,7 @@
               // filename, so here we combine it with the first one if we are
               // minimizing the symbol table
               const char *so_path =
-                  sym[sym_idx - 1]
-                      .GetMangled()
-                      .GetDemangledName(lldb::eLanguageTypeUnknown)
-                      .AsCString();
+                  sym[sym_idx - 1].GetMangled().GetDemangledName().AsCString();
               if (so_path && so_path[0]) {
                 std::string full_so_path(so_path);
                 const size_t double_slash_pos = full_so_path.find("//");
@@ -4297,11 +4294,10 @@
       }
 
       if (is_gsym) {
-        const char *gsym_name =
-            sym[sym_idx]
-                .GetMangled()
-                .GetName(lldb::eLanguageTypeUnknown, Mangled::ePreferMangled)
-                .GetCString();
+        const char *gsym_name = sym[sym_idx]
+                                    .GetMangled()
+                                    .GetName(Mangled::ePreferMangled)
+                                    .GetCString();
         if (gsym_name)
           N_GSYM_name_to_sym_idx[gsym_name] = sym_idx;
       }
@@ -4365,10 +4361,9 @@
           if (range.first != range.second) {
             for (ValueToSymbolIndexMap::const_iterator pos = range.first;
                  pos != range.second; ++pos) {
-              if (sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown,
-                                                    Mangled::ePreferMangled) ==
+              if (sym[sym_idx].GetMangled().GetName(Mangled::ePreferMangled) ==
                   sym[pos->second].GetMangled().GetName(
-                      lldb::eLanguageTypeUnknown, Mangled::ePreferMangled)) {
+                      Mangled::ePreferMangled)) {
                 m_nlist_idx_to_sym_idx[nlist_idx] = pos->second;
                 // We just need the flags from the linker symbol, so put these
                 // flags into the N_FUN flags to avoid duplicate symbols in the
@@ -4401,10 +4396,9 @@
           if (range.first != range.second) {
             for (ValueToSymbolIndexMap::const_iterator pos = range.first;
                  pos != range.second; ++pos) {
-              if (sym[sym_idx].GetMangled().GetName(lldb::eLanguageTypeUnknown,
-                                                    Mangled::ePreferMangled) ==
+              if (sym[sym_idx].GetMangled().GetName(Mangled::ePreferMangled) ==
                   sym[pos->second].GetMangled().GetName(
-                      lldb::eLanguageTypeUnknown, Mangled::ePreferMangled)) {
+                      Mangled::ePreferMangled)) {
                 m_nlist_idx_to_sym_idx[nlist_idx] = pos->second;
                 // We just need the flags from the linker symbol, so put these
                 // flags into the N_STSYM flags to avoid duplicate symbols in
@@ -4419,8 +4413,7 @@
             // Combine N_GSYM stab entries with the non stab symbol.
             const char *gsym_name = sym[sym_idx]
                                         .GetMangled()
-                                        .GetName(lldb::eLanguageTypeUnknown,
-                                                 Mangled::ePreferMangled)
+                                        .GetName(Mangled::ePreferMangled)
                                         .GetCString();
             if (gsym_name) {
               ConstNameToSymbolIndexMap::const_iterator pos =
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
index add05d1..01e50ef 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
@@ -108,8 +108,7 @@
 
             // First we find the original symbol in the .o file's symbol table
             Symbol *oso_fun_symbol = oso_symtab->FindFirstSymbolWithNameAndType(
-                exe_symbol->GetMangled().GetName(lldb::eLanguageTypeUnknown,
-                                                 Mangled::ePreferMangled),
+                exe_symbol->GetMangled().GetName(Mangled::ePreferMangled),
                 eSymbolTypeCode, Symtab::eDebugNo, Symtab::eVisibilityAny);
             if (oso_fun_symbol) {
               // Add the inverse OSO file address to debug map entry mapping
@@ -139,8 +138,7 @@
             // in the .o file
             Symbol *oso_gsym_symbol =
                 oso_symtab->FindFirstSymbolWithNameAndType(
-                    exe_symbol->GetMangled().GetName(lldb::eLanguageTypeUnknown,
-                                                     Mangled::ePreferMangled),
+                    exe_symbol->GetMangled().GetName(Mangled::ePreferMangled),
                     eSymbolTypeData, Symtab::eDebugNo, Symtab::eVisibilityAny);
             if (exe_symbol && oso_gsym_symbol && exe_symbol->ValueIsAddress() &&
                 oso_gsym_symbol->ValueIsAddress()) {
diff --git a/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp b/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
index 7696ec2..16fda8c 100644
--- a/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
+++ b/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
@@ -1950,8 +1950,7 @@
     // here for the same symbol:
     //   non-empty undecorated name from PDB
     //   empty undecorated name from LLDB
-    if (!func_undecorated_name.empty() &&
-        mangled.GetDemangledName(mangled.GuessLanguage()).IsEmpty())
+    if (!func_undecorated_name.empty() && mangled.GetDemangledName().IsEmpty())
       mangled.SetDemangledName(ConstString(func_undecorated_name));
 
     // LLDB uses several flags to control how a C++ decorated name is
@@ -1960,8 +1959,7 @@
     // PDB source unless we also apply same flags in getting undecorated
     // name through PDBSymbolFunc::getUndecoratedNameEx method.
     if (!func_undecorated_name.empty() &&
-        mangled.GetDemangledName(mangled.GuessLanguage()) !=
-            ConstString(func_undecorated_name))
+        mangled.GetDemangledName() != ConstString(func_undecorated_name))
       mangled.SetDemangledName(ConstString(func_undecorated_name));
   } else if (!func_undecorated_name.empty()) {
     mangled.SetDemangledName(ConstString(func_undecorated_name));