Don't #include DerivedTypes.h from TargetData.h.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71468 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Target/TargetData.h

@@ -23,12 +23,14 @@
 #include "llvm/Pass.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/ADT/SmallVector.h"
-#include "llvm/DerivedTypes.h"
 #include <string>
 
 namespace llvm {
 
 class Value;
+class Type;
+class IntegerType;
+class StructType;
 class StructLayout;
 class GlobalVariable;