Remove all _LIBCPP_VERSION tests from under test/std

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@283644 91177308-0d34-0410-b5e6-96231b3b80d8

test/libcxx/depr/depr.c.headers/ciso646.pass.cpp

@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <ciso646>
+
+#include <ciso646>
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main()
+{
+}