scripts/dumpconf: Update header of the dumpconf script

Remove the leftovers of the SysV init configuration and replace it with
proper information about the tool. Also add the missing Copyright
statement and remove DUMPCONF_BIN as there is no user.

Fixes: https://github.com/ibm-s390-linux/s390-tools/issues/132
Acked-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

scripts/dumpconf

@@ -1,23 +1,18 @@
 #!/bin/bash
-### BEGIN INIT INFO
-# Provides: dumpconf
-# Required-Start: $local_fs
-# Required-Stop: $local_fs
-# Should-Start:
-# Should-Stop:
-# Default-Start: 0 1 2 3 5 6
-# Default-Stop:
-# Short-Description: Configure s390 dump feature
-# Description: Configures the s390 dump feature. It uses the configuration file
-#              /etc/sysconfig/dumpconf
-# X-Systemd-RemainAfterExit: true
-### END INIT INFO
+#
+# dumpconf - dump configuration script
+#
+# This script is called by the corresponding systemd unit file dumpconf.service
+# but can also be used stand-alone.
+#
+# The configuration file is located in /etc/sysconfig/dumpconf
+#
+# Copyright IBM Corp. 2006, 2022
+#
+# s390-tools is free software; you can redistribute it and/or modify
+# it under the terms of the MIT license. See LICENSE for details.
+#
 
-# chkconfig: 012356 01 99
-
-# This script can be either used stand-alone or as System V init script.
-
-DUMPCONF_BIN=/etc/init.d/dumpconf
 DUMP_CONFIG_FILE=/etc/sysconfig/dumpconf
 CMDFULL=$0
 CMD="dumpconf"
@@ -107,7 +102,7 @@ printversion()
 {
     cat <<EOF
 dumpconf: zSeries dump configuration script version 1.1
-Copyright IBM Corp. 2006, 2009
+Copyright IBM Corp. 2006, 2022
 EOF
 }