LU-9115 llite: buggy special handling on MULTIMODRPCS

LU-9115 llite: buggy special handling on MULTIMODRPCS

There is some special handling over MULTIMODPRCS flag in
client_connect_import(), it looks unnecessary and buggy,
the MULTIMODPRCS flag would be cleared unexpectedly from
imp_connect_data on reconnect.

This patch removed the special handling code and treat
MULTIMODRPCS normally just like other flags.

Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Change-Id: Icba5a1413349f7a4c61dcac0bb4a39f1d1b0128d
Reviewed-on: https://review.whamcloud.com/25435
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>