[LLVM Diagnostic Capabilities] Remove useless includes from

DiagnosticPrinter.cpp.
These was creating a link time dependencies of IR on CodeGen and Analysis.

Part of <rdar://problem/15515174>

llvm-svn: 197447

llvm/lib/Support/DiagnosticPrinter.cpp

@@ -12,8 +12,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/Twine.h"
-#include "llvm/Analysis/ScalarEvolution.h"
-#include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/IR/Value.h"
 #include "llvm/Support/DiagnosticPrinter.h"
 #include "llvm/Support/raw_ostream.h"