message: [PdbAstBuilder] Remove unused functions
  PdbAstBuilder.cpp:273:20: warning: unused function 'GetParentUniqueName' [-Wunused-function]
  PdbAstBuilder.cpp:267:13: warning: unused function 'IsUniqueNameEnumTag' [-Wunused-function]
diff: @@ -264,23 +264,6 @@ PdbAstBuilder::CreateDeclInfoForType(const TagRecord &record, TypeIndex ti) {
  return {context, uname};
  }
  -static bool IsUniqueNameEnumTag(llvm::StringRef unique_name) {
  - if (unique_name.size() < 4)
  - return false;
  - return unique_name[3] == 'W';
  -}
  -
  -static std::string GetParentUniqueName(llvm::StringRef unique_name) {
  - if (unique_name.size() < 4)
  - return unique_name;
  - size_t start = IsUniqueNameEnumTag(unique_name) ? 5 : 4;
  - size_t end = unique_name.find('@');
  - if (end == llvm::StringRef::npos)
  - return unique_name;
  - std::string result = unique_name.str();
  - return result.erase(start, end - start + 1);
  -}
  -
  void PdbAstBuilder::BuildParentMap() {
  LazyRandomTypeCollection &types = m_index.tpi().typeCollection();
  