Back out __decltype warning from r151377: we should either warn on all the GNU
__keywords or none of them.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151401 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/decltype-98.cpp b/test/SemaCXX/decltype-98.cpp
index 44d5896..db52565 100644
--- a/test/SemaCXX/decltype-98.cpp
+++ b/test/SemaCXX/decltype-98.cpp
@@ -1,3 +1,3 @@
-// RUN: %clang_cc1 -std=c++98 -fsyntax-only -verify %s -Wgnu
+// RUN: %clang_cc1 -std=c++98 -fsyntax-only -verify %s
 extern int x;
-__decltype(1) x = 3; // expected-warning {{is a GNU extension}}
+__decltype(1) x = 3;