s3: remove now unneeded call to cmdline_messaging_context()

s3: remove now unneeded call to cmdline_messaging_context()

This was only needed as dbwrap_open() had a bug where it asked for the ctdb
connection before initializing messaging. The previous commit fixed that so we
can now safely remove the calls to cmdline_messaging_context() from all tools
that don't use messaging.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=13925

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Oct 24 09:33:47 UTC 2019 on sn-devel-184