s3: Remove a bunch of calls to procid_self()

All callers to messaging_[re]init only used procid_self()

source3/lib/server_contexts.c

@@ -55,7 +55,6 @@ struct messaging_context *server_messaging_context(void)
 		 * children exiting.
 		 */
 		server_msg_ctx = messaging_init(NULL,
-					        procid_self(),
 					        server_event_context());
 	}
 	return server_msg_ctx;