Remove obsolete script

set-change-date is much better.

script/update-change-date

@@ -1,56 +0,0 @@
-#!/bin/bash
-#
-# Copyright (c) 2016 MariaDB Corporation Ab
-#
-#  Use of this software is governed by the Business Source License included
-#  in the LICENSE.TXT file and at www.mariadb.com/bsl11.
-#
-#  Change Date: 2024-06-02
-#
-#  On the date above, in accordance with the Business Source License, use
-#  of this software will be governed by version 2 or later of the General
-#  Public License.
-#
-
-function print_usage_and_exit
-{
-    echo "update-change-date from to"
-    echo
-    echo "  from: Old change date, e.g. 2019-01-01"
-    echo "  to  : New change date, e.g. 2019-07-01"
-
-    exit 1
-}
-
-function run
-{
-    local from="Change Date: "$1
-    local to="Change Date: "$2
-
-    local files=`find . -type f`
-
-    for f in $files
-    do
-        fgrep -q "$from" $f 2> /dev/null
-        if [ $? -eq 0 ]
-        then
-            echo $f
-            sed -i -e "s/$from/$to/" $f
-        fi
-    done
-}
-
-function main
-{
-    if [ $# -ne 2 ]
-    then
-        print_usage_and_exit
-    fi
-
-    run $1 $2
-
-    echo
-    echo "Remeber to update LICENSE.TXT as well."
-}
-
-main $*