ocfs2: Small documentation update

Remove some features from the "not-supported" list that are actually
supported now.

Signed-off-by: Mark Fasheh <[e-mail]>

Documentation/filesystems/ocfs2.txt

···
 Caveats
 =======
 Features which OCFS2 does not support yet:
-	- extended attributes
 	- quotas
-	- cluster aware flock
-	- cluster aware lockf
 	- Directory change notification (F_NOTIFY)
 	- Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
 	- POSIX ACLs