Eliminate duplicate or unneccesary #include's


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2397 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAlloc/InterferenceGraph.cpp b/lib/CodeGen/RegAlloc/InterferenceGraph.cpp
index c90ae4a..412f35f 100644
--- a/lib/CodeGen/RegAlloc/InterferenceGraph.cpp
+++ b/lib/CodeGen/RegAlloc/InterferenceGraph.cpp
@@ -1,6 +1,6 @@
 #include "llvm/CodeGen/InterferenceGraph.h"
 #include "Support/STLExtras.h"
-#include <iostream>
+#include "llvm/CodeGen/RegAllocCommon.h"
 #include <algorithm>
 using std::cerr;