make: remove SCCS ident stuff

@@ -24,12 +24,10 @@
 $ CDDL HEADER END
 $
 $ Copyright 1996 Sun Microsystems, Inc. All rights reserved.
 $ Use is subject to license terms.
 $
-$ @(#)libvroot.msg 1.2 06/12/12
-$
 142     "file_lock: file %s is already locked.\n"
 143     "file_lock: will periodically check the lockfile %s for two minutes.\n"
 144     "Current working directory %s\n"
 145     "Could not lock file `%s'; "
 146     " failed - "