Revert "Create lib/DebugInfo/PDB."

This reverts commit 21028, as it is causing failures in LLVMConfig.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228431 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/DebugInfo/PDB/PDBSymbolCustom.h

@@ -1,38 +0,0 @@
-//===- PDBSymbolCustom.h - compiler-specific types --------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_DEBUGINFO_PDB_PDBSYMBOLCUSTOM_H
-#define LLVM_DEBUGINFO_PDB_PDBSYMBOLCUSTOM_H
-
-#include "llvm/ADT/SmallVector.h"
-
-#include "PDBSymbol.h"
-#include "PDBTypes.h"
-
-namespace llvm {
-
-/// PDBSymbolCustom represents symbols that are compiler-specific and do not
-/// fit anywhere else in the lexical hierarchy.
-/// https://msdn.microsoft.com/en-us/library/d88sf09h.aspx
-class PDBSymbolCustom : public PDBSymbol {
-public:
-  PDBSymbolCustom(std::unique_ptr<IPDBRawSymbol> CustomSymbol);
-
-  void getDataBytes(llvm::SmallVector<uint8_t, 32> &bytes);
-
-  FORWARD_SYMBOL_METHOD(getSymIndexId)
-
-  static bool classof(const PDBSymbol *S) {
-    return S->getSymTag() == PDB_SymType::Custom;
-  }
-};
-
-}; // namespace llvm
-
-#endif // LLVM_DEBUGINFO_PDB_PDBSYMBOLCUSTOM_H