s3: messaging: remove unused messaging_init_client()

Bug: https://bugzilla.samba.org/show_bug.cgi?id=13465

Signed-off-by: Ralph Boehme <[email protected]>
15 jobs for slow-autobuild in 204 minutes and 50 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Build
passed #80731210
docker shared
build_ctdb

00:23:17

passed #80731212
docker shared
build_others

00:13:30

passed #80731213
docker private
build_samba

03:24:50

passed #80731217
docker private
build_samba_ad_dc

01:06:38

passed #80731203
docker shared
build_samba_ad_dc_2

00:30:17

passed #80731211
docker shared
build_samba_ctdb

00:36:14

passed #80731215
docker private
build_samba_fileserver

00:18:16

passed #80731205
docker shared
build_samba_libs

00:35:44

passed #80731196
docker shared
build_samba_none_env

00:50:10

passed #80731197
docker shared
build_samba_nopython

00:26:18

passed #80731214
docker private
build_samba_nt4

00:33:46

passed #80731201
docker shared
build_samba_o3

00:38:02

passed #80731208
docker shared
build_samba_static

00:50:30

passed #80731198
docker shared
build_samba_systemkrb5

00:18:36

passed #80731199
docker shared
build_samba_xc

00:07:04