media: ir-kbd-i2c: remove outdated comments

The "free memory" comment is obsolete since 2013 and the other ones
explain the obvious. Just remove the comments.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/i2c/ir-kbd-i2c.c

@@ -916,16 +916,13 @@ static int ir_remove(struct i2c_client *client)
 {
 	struct IR_i2c *ir = i2c_get_clientdata(client);
 
-	/* kill outstanding polls */
 	cancel_delayed_work_sync(&ir->work);
 
 	if (ir->tx_c)
 		i2c_unregister_device(ir->tx_c);
 
-	/* unregister device */
 	rc_unregister_device(ir->rc);
 
-	/* free memory */
 	return 0;
 }