packaging: Remove ulimit usage for setting core file size limit

packaging: Remove ulimit usage for setting core file size limit

Recent commit ebd139c4db7e51a2d7843a773991f15cadf504dd modified smb.init
to set core file size to 'unlimited' by default using the ulimit command.
But when smb and winbind services are initiated via sysv init scripts,
another variable named DAEMON_COREFILE_LIMIT takes higher priority in
deciding the core file size. Therefore setting default value using ulimit
command is useless.

Signed-off-by: Anoop C S <anoopcs@redhat.com>
Reviewed-by: Jose A. Rivera <jarrpa@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>