fsnotify: cleanup should_send_event

The change to use srcu and walk the object list rather than the global
fsnotify_group list means that should_send_event is no longer needed for a
number of groups and can be simplified for others.  Do that.

Signed-off-by: Eric Paris <eparis@redhat.com>
diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index 59d6399..53b31f4 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -180,8 +180,8 @@
 		 " data_is=%d cookie=%d event=%p\n", __func__, group, to_tell,
 		 mnt, mark, mask, data, data_is, cookie, *event);
 
-	if (!group->ops->should_send_event(group, to_tell, mnt, mark, mask,
-					   data, data_is))
+	if (group->ops->should_send_event(group, to_tell, mnt, mark, mask,
+					  data, data_is) == false)
 		return 0;
 	if (!*event) {
 		*event = fsnotify_create_event(to_tell, mask, data,