staging: comedi: adv_pci1710: remove 'ai_timer2' from private data

This member of the private data is set to 0 but it is never used. Just
remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/adv_pci1710.c

@@ -320,7 +320,6 @@ struct pci1710_private {
 	unsigned int ai_flags;	/*  flaglist */
 	unsigned int ai_data_len;	/*  len of data buffer */
 	unsigned int ai_timer1;	/*  timers */
-	unsigned int ai_timer2;
 	unsigned short ao_data[4];	/*  data output buffer */
 	unsigned int cnt0_write_wait;	/* after a write, wait for update of the
 					 * internal state */
@@ -1129,7 +1128,6 @@ static int pci171x_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 	devpriv->ai_flags = cmd->flags;
 	devpriv->ai_data_len = s->async->prealloc_bufsz;
 	devpriv->ai_timer1 = 0;
-	devpriv->ai_timer2 = 0;
 
 	if (cmd->stop_src == TRIG_COUNT)
 		devpriv->ai_scans = cmd->stop_arg;