* src/s/usg5-4.h: Fix previous change.

Suggested by Lawrence Mitchell <wence@gmx.li>

src/ChangeLog

+2010-06-09  Dan Nicolaescu  <dann@ics.uci.edu>
+
+	* s/usg5-4.h: Fix previous change.
+	Suggested by Lawrence Mitchell <wence@gmx.li>
+
 2010-06-08  Dan Nicolaescu  <dann@ics.uci.edu>
 	* lread.c (X_OK): Remove, unused.

src/s/usg5-4.h

@@ -61,9 +61,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 /* The docs for system V/386 suggest v.3 has sigpause, so let's try it.  */
 #define HAVE_SYSV_SIGPAUSE
 
-/* If we're using the System V X port, BSD bstring functions will be handy.  */
-#ifdef HAVE_X_WINDOWS
-
 /* On USG systems signal handlers return void.  */
 #define SIGTYPE void