staging: most: i2c: remove unnecessary poison_channel call

This removes call of the poison_channel that is:
  - not allowed after most_deregister_interface;
  - is made during the most_deregister_interface call.

Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/most/i2c/i2c.c

@@ -376,16 +376,11 @@ static int i2c_probe(struct i2c_client *client, const struct i2c_device_id *id)
 static int i2c_remove(struct i2c_client *client)
 {
 	struct hdm_i2c *dev = i2c_get_clientdata(client);
-	int i;
 
 	if (!dev->polling_mode)
 		free_irq(client->irq, dev);
 
 	most_deregister_interface(&dev->most_iface);
-
-	for (i = 0 ; i < NUM_CHANNELS; i++)
-		if (dev->is_open[i])
-			poison_channel(&dev->most_iface, i);
 	cancel_delayed_work_sync(&dev->rx.dwork);
 	kfree(dev);