make: remove SCCS ident stuff

@@ -20,15 +20,11 @@
  */
 /*
  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
  * Use is subject to license terms.
  */
-/*
- * @(#)mksh.cc 1.22 06/12/12
- */
 
-#pragma ident   "@(#)mksh.cc    1.22    06/12/12"
 
 /*
  *      mksh.cc
  *
  *      Execute the command(s) of one Make or DMake rule