Tidy up #includes, deleting a bunch of unnecessary #includes.

llvm-svn: 61715

llvm/lib/CodeGen/TwoAddressInstructionPass.cpp

@@ -42,7 +42,7 @@
 #include "llvm/Support/Debug.h"
 #include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/STLExtras.h"
 using namespace llvm;