Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

libexec/bootpd/bootpd.c

@@ -38,8 +38,6 @@ SOFTWARE.
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/socket.h>

libexec/bootpd/bootpgw/bootpgw.c

@@ -31,8 +31,6 @@ SOFTWARE.
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/socket.h>

libexec/bootpd/rtmsg.c

@@ -40,8 +40,6 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
 #include <sys/param.h>
 /*
  * Verify that we are at least 4.4 BSD

libexec/bootpd/tools/bootptest/bootptest.c

@@ -34,8 +34,6 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
 char *usage = "bootptest [-h] server-name [vendor-data-template-file]";
 
 #include <sys/types.h>