Remove variable store that is never read.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180014 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp
index c5b9e50..c678e8e 100644
--- a/lib/Target/ARM/ARMFastISel.cpp
+++ b/lib/Target/ARM/ARMFastISel.cpp
@@ -2605,7 +2605,7 @@
 
   unsigned Opc;
   bool isBoolZext = false;
-  const TargetRegisterClass *RC = TLI.getRegClassFor(MVT::i32);
+  const TargetRegisterClass *RC = 0;
   switch (SrcVT.SimpleTy) {
   default: return 0;
   case MVT::i16: