Remove getDataLayout() from TargetSelectionDAGInfo (had no users)

Summary:
Remove empty subclass in the process.

This change is part of a series of commits dedicated to have a single
DataLayout during compilation by using always the one owned by the
module.

Reviewers: echristo

Subscribers: jholewinski, llvm-commits, rafael, yaron.keren, ted

Differential Revision: http://reviews.llvm.org/D11045

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 241780
diff --git a/llvm/lib/Target/MSP430/MSP430Subtarget.h b/llvm/lib/Target/MSP430/MSP430Subtarget.h
index 81f6f02..ff2656d 100644
--- a/llvm/lib/Target/MSP430/MSP430Subtarget.h
+++ b/llvm/lib/Target/MSP430/MSP430Subtarget.h
@@ -18,8 +18,8 @@
 #include "MSP430ISelLowering.h"
 #include "MSP430InstrInfo.h"
 #include "MSP430RegisterInfo.h"
-#include "MSP430SelectionDAGInfo.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/Target/TargetSelectionDAGInfo.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
 #include <string>
 
@@ -35,7 +35,7 @@
   MSP430FrameLowering FrameLowering;
   MSP430InstrInfo InstrInfo;
   MSP430TargetLowering TLInfo;
-  MSP430SelectionDAGInfo TSInfo;
+  TargetSelectionDAGInfo TSInfo;
 
 public:
   /// This constructor initializes the data members to match that
@@ -60,7 +60,7 @@
   const MSP430TargetLowering *getTargetLowering() const override {
     return &TLInfo;
   }
-  const MSP430SelectionDAGInfo *getSelectionDAGInfo() const override {
+  const TargetSelectionDAGInfo *getSelectionDAGInfo() const override {
     return &TSInfo;
   }
 };