make: remove SCCS ident stuff

*** 24,35 ****
  $ 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 - "
--- 24,33 ----