Kill unused sesssion and group values in rocket driver

The process_session() and process_group() values are not really used by the
driver.
Signed-off-by: NSukadev Bhattiprolu <sukadev@us.ibm.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: <containers@lists.osdl.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/char/rocket.c

@@ -1014,9 +1014,6 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
 	/*
 	 * Info->count is now 1; so it's safe to sleep now.
 	 */
-	info->session = process_session(current);
-	info->pgrp = process_group(current);
-
 	if ((info->flags & ROCKET_INITIALIZED) == 0) {
 		cp = &info->channel;
 		sSetRxTrigger(cp, TRIG_1);

drivers/char/rocket_int.h

@@ -1158,8 +1158,6 @@ struct r_port {
 	int xmit_head;
 	int xmit_tail;
 	int xmit_cnt;
-	int session;
-	int pgrp;
 	int cd_status;
 	int ignore_status_mask;
 	int read_status_mask;