fs: dlm: remove twice INIT_WORK

This patch removed a twice INIT_WORK() functionality. We already doing
this inside of dlm_lowcomms_init() functionality which is called only
once dlm is loaded.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>