Revert "staging: bcm2835_camera: Ensure all buffers are returned on d…

…isable"

This reverts commit d70c57a.

The patch has mutated beyond recognition and created merge errors
against 37c35be "staging: mmal-vchiq: Add support for event callbacks."

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c

@@ -268,8 +268,6 @@ static void buffer_work_cb(struct work_struct *work)
 	if (!buffer->cmd)
 		atomic_dec(&msg_context->u.bulk.port->buffers_with_vpu);
 
-	atomic_dec(&msg_context->u.bulk.port->buffers_with_vpu);
-
 	msg_context->u.bulk.port->buffer_cb(msg_context->u.bulk.instance,
 					    msg_context->u.bulk.port,
 					    msg_context->u.bulk.status,