media: imx: imx-mipi-csis: Don't stop streaming at runtime suspend time

Streaming is guaranteed to have been stopped by the time the device gets
runtime suspended, as pm_runtime_put() is called from .s_stream(0) only.
Drop the manual stop.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/nxp/imx-mipi-csis.c

@@ -1322,7 +1322,6 @@ static int __maybe_unused mipi_csis_runtime_suspend(struct device *dev)
 
 	mutex_lock(&csis->lock);
 	if (csis->state & ST_POWERED) {
-		mipi_csis_stop_stream(csis);
 		ret = mipi_csis_phy_disable(csis);
 		if (ret)
 			goto unlock;