Remove a duplicate frame_sp local that was shadowing the one we copied the incoming SBFrame into.

<rdar://problem/12304255>

llvm-svn: 163943

lldb/source/API/SBThread.cpp

@@ -765,7 +765,6 @@ SBThread::StepOverUntil (lldb::SBFrame &sb_frame,
             return sb_error;
         }
         
-        StackFrameSP frame_sp;
         if (!frame_sp)
         {
             frame_sp = thread->GetSelectedFrame ();