Eliminate lots of unnecessary #includes and forward decls
there are probably more to kill


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TargetMachine/TargetMachine.cpp b/lib/CodeGen/TargetMachine/TargetMachine.cpp
index 9b9729c..653f021 100644
--- a/lib/CodeGen/TargetMachine/TargetMachine.cpp
+++ b/lib/CodeGen/TargetMachine/TargetMachine.cpp
@@ -10,23 +10,14 @@
 //**************************************************************************/
 
 
-//************************** System Include Files **************************/
-
 //*************************** User Include Files ***************************/
 
-#include "llvm/DerivedTypes.h"
 #include "llvm/CodeGen/TargetMachine.h"
-
-
-//************************* Opaque Declarations ****************************/
-
-class StructType;
-class MachineInstrInfo;
+#include "llvm/DerivedTypes.h"
 
 
 //************************ Class Implementations **************************/
 
-
 //---------------------------------------------------------------------------
 // function TargetMachine::findOptimalMemberOffsets 
 //