GFS2: Don't bother trying to add rgrps to the lru list

This patch removes a call to gfs2_glock_add_to_lru from function
gfs2_clear_rgrpd. The call is just a waste of time because as soon
as it adds it to the lru_list, the call to gfs2_glock_put takes it
back off again.
Signed-off-by: NBob Peterson <rpeterso@redhat.com>

fs/gfs2/rgrp.c

@@ -706,7 +706,6 @@ void gfs2_clear_rgrpd(struct gfs2_sbd *sdp)
 
 		if (gl) {
 			glock_set_object(gl, NULL);
-			gfs2_glock_add_to_lru(gl);
 			gfs2_glock_put(gl);
 		}