LU-7760 ptlrpc: remove incorrect pid printing

LU-7760 ptlrpc: remove incorrect pid printing

Remove incorrect pid printing in ptlrpc_send_new_req().
It was always printing 0, and current pid is part of the message
header anyway.

Signed-off-by: Sebastien Buisson <sbuisson@ddn.com>
Change-Id: Ia786bc108c4fecb87d5cb16dab88253dc16ce28c
Reviewed-on: https://review.whamcloud.com/27336
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>