ALSA: vxpocket: Drop no longer existent chip->dev assignment

The recent cleanup change for vx_core overlooked the code in vxpocket
pcmcia driver.  Kill the superfluous line as well.

Fixes: b426b3ba ("ALSA: vx_core: Drop unused dev field")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202408090016.kW0TA6fc-lkp@intel.com/
Link: https://patch.msgid.link/20240808162902.20082-1-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pcmcia/vx/vxpocket.c

@@ -204,8 +204,6 @@ static int vxpocket_config(struct pcmcia_device *link)
 	if (ret)
 		goto failed;
 
-	chip->dev = &link->dev;
-
 	if (snd_vxpocket_assign_resources(chip, link->resource[0]->start,
 						link->irq) < 0)
 		goto failed;