commit 945ffe54 ("qnx4: remove write support") removed the (defunct)
write support but missed a chunk of related, dead code.
Signed-off-by: Anders Larsen <al@alarsen.net>
Cc:  Jiri Kosina <jkosina@suse.cz>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>