Revert r267049, r26706[16789], r267071 - Refactor raw pdb dumper into library

r267049 broke multiple buildbots (e.g. clang-cmake-mips, and clang-x86_64-linux-selfhost-modules) which the follow-ups have not yet resolved and this is preventing subsequent committers from being notified about additional failures on the affected buildbots.

llvm-svn: 267148
diff --git a/llvm/lib/DebugInfo/PDB/PDB.cpp b/llvm/lib/DebugInfo/PDB/PDB.cpp
index 4bc0141..bb40942 100644
--- a/llvm/lib/DebugInfo/PDB/PDB.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDB.cpp
@@ -17,30 +17,23 @@
 #if HAVE_DIA_SDK
 #include "llvm/DebugInfo/PDB/DIA/DIASession.h"
 #endif
-#include "llvm/DebugInfo/PDB/Raw/RawSession.h"
 
 using namespace llvm;
 
 PDB_ErrorCode llvm::loadDataForPDB(PDB_ReaderType Type, StringRef Path,
                                    std::unique_ptr<IPDBSession> &Session) {
   // Create the correct concrete instance type based on the value of Type.
-  if (Type == PDB_ReaderType::Raw)
-    return RawSession::createFromPdb(Path, Session);
-
 #if HAVE_DIA_SDK
   return DIASession::createFromPdb(Path, Session);
 #endif
-	return PDB_ErrorCode::NoDiaSupport;
+  return PDB_ErrorCode::NoDiaSupport;
 }
 
 PDB_ErrorCode llvm::loadDataForEXE(PDB_ReaderType Type, StringRef Path,
                                    std::unique_ptr<IPDBSession> &Session) {
   // Create the correct concrete instance type based on the value of Type.
-  if (Type == PDB_ReaderType::Raw)
-    return RawSession::createFromExe(Path, Session);
-
 #if HAVE_DIA_SDK
   return DIASession::createFromExe(Path, Session);
 #endif
-	return PDB_ErrorCode::NoDiaSupport;
+  return PDB_ErrorCode::NoDiaSupport;
 }