bridge-utils: remove whitespace at end of file

package/bridge-utils/bridge.mk

@@ -27,4 +27,3 @@ $(BRIDGE_TARGET_UNINSTALL):
 	rm -f $(addprefix $(TARGET_DIR)/usr/,lib/libbridge.a \
 		include/libbridge.h man/man8/brctl.8 sbin/brctl)
 	rm -f $(BRIDGE_TARGET_INSTALL_TARGET) $(BRIDGE_HOOK_POST_INSTALL)
-