Revert "Fix Clang -Wmissing-override warning"

This reverts commit r237975. This seems also to break with gcc 4.7

llvm-svn: 238004
diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldCOFF.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldCOFF.cpp
index c8d3d22..0cb1d7b 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldCOFF.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldCOFF.cpp
@@ -24,17 +24,18 @@
 
 namespace {
 
-class LoadedCOFFObjectInfo
-    : public RuntimeDyld::LoadedObjectInfoHelper<LoadedCOFFObjectInfo> {
+class LoadedCOFFObjectInfo : public RuntimeDyld::LoadedObjectInfo {
 public:
   LoadedCOFFObjectInfo(RuntimeDyldImpl &RTDyld, unsigned BeginIdx,
                        unsigned EndIdx)
-      : LoadedObjectInfoHelper(RTDyld, BeginIdx, EndIdx) {}
+      : RuntimeDyld::LoadedObjectInfo(RTDyld, BeginIdx, EndIdx) {}
 
   OwningBinary<ObjectFile>
   getObjectForDebug(const ObjectFile &Obj) const override {
     return OwningBinary<ObjectFile>();
   }
+
+  RuntimeDyld::LoadedObjectInfo *clone() const { return new LoadedCOFFObjectInfo(*this); }
 };
 }