Most MCCodeEmitter's don't meed MCContext.

llvm-svn: 134922
diff --git a/llvm/lib/Target/ARM/ARMMCCodeEmitter.cpp b/llvm/lib/Target/ARM/ARMMCCodeEmitter.cpp
index b92e02d..df3a14f 100644
--- a/llvm/lib/Target/ARM/ARMMCCodeEmitter.cpp
+++ b/llvm/lib/Target/ARM/ARMMCCodeEmitter.cpp
@@ -40,12 +40,11 @@
   void operator=(const ARMMCCodeEmitter &); // DO NOT IMPLEMENT
   const MCInstrInfo &MCII;
   const MCSubtargetInfo &STI;
-  MCContext &Ctx;
 
 public:
   ARMMCCodeEmitter(const MCInstrInfo &mcii, const MCSubtargetInfo &sti,
                    MCContext &ctx)
-    : MCII(mcii), STI(sti), Ctx(ctx) {
+    : MCII(mcii), STI(sti) {
   }
 
   ~ARMMCCodeEmitter() {}