Revert "Extend CFGPrinter and CallPrinter with Heat Colors"

This reverts r335996 which broke graph printing in Polly.

llvm-svn: 336000
diff --git a/llvm/lib/Analysis/RegionPrinter.cpp b/llvm/lib/Analysis/RegionPrinter.cpp
index 8fe4507..5986b8c 100644
--- a/llvm/lib/Analysis/RegionPrinter.cpp
+++ b/llvm/lib/Analysis/RegionPrinter.cpp
@@ -47,11 +47,11 @@
       BasicBlock *BB = Node->getNodeAs<BasicBlock>();
 
       if (isSimple())
-        return DOTGraphTraits<CFGDOTInfo*>
-          ::getSimpleNodeLabel(BB, nullptr);
+        return DOTGraphTraits<const Function*>
+          ::getSimpleNodeLabel(BB, BB->getParent());
       else
-        return DOTGraphTraits<CFGDOTInfo*>
-          ::getCompleteNodeLabel(BB, nullptr);
+        return DOTGraphTraits<const Function*>
+          ::getCompleteNodeLabel(BB, BB->getParent());
     }
 
     return "Not implemented";