Drop MySQL

This is outdated and still on 5.0.x and nobody volunteered to
update this package.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

src/initscripts/system/cleanfs

@@ -97,10 +97,6 @@ case "${1}" in
 		if [ ! -e /var/run/dbus ]; then
 			mkdir -p /var/run/dbus
 		fi
-		if [ ! -e /var/run/mysql ]; then
-			mkdir -p /var/run/mysql
-			chown mysql:mysql /var/run/mysql
-		fi
 		if [ ! -e /var/run/saslauthd ]; then
 			mkdir -p /var/run/saslauthd
 		fi