Revert "Improve the handling of missing elf symtab and missing symbol sizes"

This reverts commit 252dda67782f2cbf838e375bce21ed4191f6d9ce.

The commit caused several test failure on the OSX build bot.

llvm-svn: 260377
diff --git a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
index 0a1f78e..48ae96a 100644
--- a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
+++ b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.h
@@ -150,6 +150,9 @@
     lldb_private::Symtab *
     GetSymtab() override;
 
+    lldb_private::Symbol *
+    ResolveSymbolForAddress(const lldb_private::Address& so_addr, bool verify_unique) override;
+
     bool
     IsStripped () override;
 
@@ -346,10 +349,6 @@
                            const ELFSectionHeaderInfo *rela_hdr,
                            lldb::user_id_t section_id);
 
-    void
-    ParseUnwindSymbols(lldb_private::Symtab *symbol_table,
-                       lldb_private::DWARFCallFrameInfo* eh_frame);
-
     /// Relocates debug sections
     unsigned
     RelocateDebugSections(const elf::ELFSectionHeader *rel_hdr, lldb::user_id_t rel_id);