Fix a minor lint warning.

usr.bin/make/main.c

@@ -39,9 +39,11 @@
  */
 
 #ifndef lint
+#if 0
 static char copyright[] =
 "@(#) Copyright (c) 1988, 1989, 1990, 1993\n\
 	The Regents of the University of California.  All rights reserved.\n";
+#endif
 #endif /* not lint */
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");