[GFS2] Remove unused sysfs files

Four of the sysfs files are unused and can therefore be removed.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/sys.c

@@ -426,9 +426,6 @@ static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
 }                                                                             \
 TUNE_ATTR_2(name, name##_store)
 
-TUNE_ATTR(ilimit, 0);
-TUNE_ATTR(ilimit_tries, 0);
-TUNE_ATTR(ilimit_min, 0);
 TUNE_ATTR(demote_secs, 0);
 TUNE_ATTR(incore_log_blocks, 0);
 TUNE_ATTR(log_flush_secs, 0);
@@ -447,7 +444,6 @@ TUNE_ATTR(quota_simul_sync, 1);
 TUNE_ATTR(quota_cache_secs, 1);
 TUNE_ATTR(max_atomic_write, 1);
 TUNE_ATTR(stall_secs, 1);
-TUNE_ATTR(entries_per_readdir, 1);
 TUNE_ATTR(greedy_default, 1);
 TUNE_ATTR(greedy_quantum, 1);
 TUNE_ATTR(greedy_max, 1);
@@ -459,9 +455,6 @@ TUNE_ATTR_DAEMON(quotad_secs, quotad_process);
 TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
 
 static struct attribute *tune_attrs[] = {
-	&tune_attr_ilimit.attr,
-	&tune_attr_ilimit_tries.attr,
-	&tune_attr_ilimit_min.attr,
 	&tune_attr_demote_secs.attr,
 	&tune_attr_incore_log_blocks.attr,
 	&tune_attr_log_flush_secs.attr,
@@ -478,7 +471,6 @@ static struct attribute *tune_attrs[] = {
 	&tune_attr_quota_cache_secs.attr,
 	&tune_attr_max_atomic_write.attr,
 	&tune_attr_stall_secs.attr,
-	&tune_attr_entries_per_readdir.attr,
 	&tune_attr_greedy_default.attr,
 	&tune_attr_greedy_quantum.attr,
 	&tune_attr_greedy_max.attr,