Remove dead code.

Author: adrian-prantl

lib/IRGen/IRGenDebugInfo.cpp

@@ -1155,8 +1155,6 @@ llvm::DINodeArray IRGenDebugInfo::getEnumElements(DebugTypeInfo DbgTy,
       auto MTy = createMemberType(ElemDbgTy, ElemDecl->getName().str(), Offset,
                                   Scope, File, Flags);
       Elements.push_back(MTy);
-      if (ED->isIndirect() || ElemDecl->isIndirect())
-        IndirectEnumCases.insert(MTy);
     }
   }
   return DBuilder.getOrCreateArray(Elements);

lib/IRGen/IRGenDebugInfo.h

@@ -69,7 +69,6 @@ class IRGenDebugInfo {
   llvm::DenseMap<TypeBase *, llvm::TrackingMDNodeRef> DITypeCache;
   llvm::StringMap<llvm::TrackingMDNodeRef> DIModuleCache;
   TrackingDIRefMap DIRefMap;
-  llvm::SmallPtrSet<const llvm::DIType *, 16> IndirectEnumCases;
 
   llvm::BumpPtrAllocator DebugInfoNames;
   StringRef CWDName;                    /// The current working directory.