Clean up CLANG_VERSION check

Change-Id: Idfdffd73e9029216775d2a6ad46293ee1a4f1308
diff --git a/compilerplugins/clang/test/datamembershadow.cxx b/compilerplugins/clang/test/datamembershadow.cxx
index 24a0da9..5965421 100644
--- a/compilerplugins/clang/test/datamembershadow.cxx
+++ b/compilerplugins/clang/test/datamembershadow.cxx
@@ -7,9 +7,12 @@
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#include <sal/config.h>

#include <config_clang.h>

// '#if CLANG_VERSION >= 30800' covers large parts of compilerplugins/clang/datamembershadow.cxx
#if (__clang_major__ == 3 && __clang_minor__ >= 8) || __clang_major__ > 3
#if CLANG_VERSION >= 30800
struct Bar {
    int x; // expected-note {{superclass member here [loplugin:datamembershadow]}}
};