Remove unnecessary includes

Author: Icohedron

clang/lib/Sema/SemaHLSL.cpp

@@ -21,7 +21,6 @@
 #include "clang/AST/Type.h"
 #include "clang/AST/TypeLoc.h"
 #include "clang/Basic/Builtins.h"
-#include "clang/Basic/DiagnosticFrontend.h"
 #include "clang/Basic/DiagnosticSema.h"
 #include "clang/Basic/IdentifierTable.h"
 #include "clang/Basic/LLVM.h"
@@ -37,7 +36,6 @@
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Twine.h"
-#include "llvm/IR/DataLayout.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/DXILABI.h"
 #include "llvm/Support/ErrorHandling.h"