[GFS2] Remove unused variable

Remove an unused variable.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/incore.h

@@ -416,7 +416,6 @@ struct gfs2_tune {
 	unsigned int gt_stall_secs; /* Detects trouble! */
 	unsigned int gt_complain_secs;
 	unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
-	unsigned int gt_entries_per_readdir;
 	unsigned int gt_statfs_quantum;
 	unsigned int gt_statfs_slow;
 };

fs/gfs2/super.c

@@ -76,7 +76,6 @@ void gfs2_tune_init(struct gfs2_tune *gt)
 	gt->gt_stall_secs = 600;
 	gt->gt_complain_secs = 10;
 	gt->gt_reclaim_limit = 5000;
-	gt->gt_entries_per_readdir = 32;
 	gt->gt_statfs_quantum = 30;
 	gt->gt_statfs_slow = 0;
 }