De-virtualize a method since it doesn't override anything and isn't overridden itself.

llvm-svn: 203440
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
index 2d44b1a..041a0fd 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
@@ -483,7 +483,7 @@
     MCELFStreamer::EmitInstruction(Inst, STI);
   }
 
-  virtual void emitInst(uint32_t Inst, char Suffix) {
+  void emitInst(uint32_t Inst, char Suffix) {
     unsigned Size;
     char Buffer[4];
     const bool LittleEndian = getContext().getAsmInfo()->isLittleEndian();