Remove unused variable.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162235 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/AST/Stmt.h b/include/clang/AST/Stmt.h
index 19da420..fc21631 100644
--- a/include/clang/AST/Stmt.h
+++ b/include/clang/AST/Stmt.h
@@ -1371,7 +1371,6 @@
 
   bool IsSimple;
   bool IsVolatile;
-  bool MSAsm;
 
   unsigned NumOutputs;
   unsigned NumInputs;