Input: drop vb2_ops_wait_prepare/finish

Since commit 8878598 ("media: vb2: use lock if wait_prepare/finish
are NULL") it is no longer needed to set the wait_prepare/finish
vb2_ops callbacks as long as the lock field in vb2_queue is set.

Since the vb2_ops_wait_prepare/finish callbacks already rely on that field,
we can safely drop these callbacks.

This simplifies the code and this is a step towards the goal of deleting
these callbacks.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Link: https://lore.kernel.org/r/ec811552-6014-43d4-9fcc-2ac729a8b08e@xs4all.nl
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Author: hverkuil

drivers/input/rmi4/rmi_f54.c

@@ -372,8 +372,6 @@ static const struct vb2_ops rmi_f54_queue_ops = {
 	.queue_setup            = rmi_f54_queue_setup,
 	.buf_queue              = rmi_f54_buffer_queue,
 	.stop_streaming		= rmi_f54_stop_streaming,
-	.wait_prepare           = vb2_ops_wait_prepare,
-	.wait_finish            = vb2_ops_wait_finish,
 };
 
 static const struct vb2_queue rmi_f54_queue = {

drivers/input/touchscreen/atmel_mxt_ts.c

@@ -2535,8 +2535,6 @@ static void mxt_buffer_queue(struct vb2_buffer *vb)
 static const struct vb2_ops mxt_queue_ops = {
 	.queue_setup		= mxt_queue_setup,
 	.buf_queue		= mxt_buffer_queue,
-	.wait_prepare		= vb2_ops_wait_prepare,
-	.wait_finish		= vb2_ops_wait_finish,
 };
 
 static const struct vb2_queue mxt_queue = {

drivers/input/touchscreen/sur40.c

@@ -1108,8 +1108,6 @@ static const struct vb2_ops sur40_queue_ops = {
 	.buf_queue		= sur40_buffer_queue,
 	.start_streaming	= sur40_start_streaming,
 	.stop_streaming		= sur40_stop_streaming,
-	.wait_prepare		= vb2_ops_wait_prepare,
-	.wait_finish		= vb2_ops_wait_finish,
 };
 
 static const struct vb2_queue sur40_queue = {