staging: comedi: addi_common.h: remove 'b_SingleDiff' from private data

This member is set but 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/addi-data/addi_common.c

@@ -157,14 +157,10 @@ static int addi_auto_attach(struct comedi_device *dev,
 		s->subdev_flags =
 			SDF_READABLE | SDF_COMMON | SDF_GROUND
 			| SDF_DIFF;
-		if (devpriv->s_EeParameters.i_NbrAiChannel) {
-			s->n_chan =
-				devpriv->s_EeParameters.i_NbrAiChannel;
-			devpriv->b_SingelDiff = 0;
-		} else {
+		if (devpriv->s_EeParameters.i_NbrAiChannel)
+			s->n_chan = devpriv->s_EeParameters.i_NbrAiChannel;
+		else
 			s->n_chan = this_board->i_NbrAiChannelDiff;
-			devpriv->b_SingelDiff = 1;
-		}
 		s->maxdata = devpriv->s_EeParameters.i_AiMaxdata;
 		s->len_chanlist = this_board->i_AiChannelList;
 		s->range_table = this_board->pr_AiRangelist;

drivers/staging/comedi/drivers/addi-data/addi_common.h

@@ -141,7 +141,6 @@ struct addi_private {
 	unsigned char b_InterruptMode;	/*  eoc eos or dma */
 	unsigned char b_EocEosInterrupt;	/*  Enable disable eoc eos interrupt */
 	unsigned int ui_EocEosConversionTime;
-	unsigned char b_SingelDiff;
 	unsigned char b_ExttrigEnable;	/* To enable or disable external trigger */
 
 	/* Pointer to the current process */

drivers/staging/comedi/drivers/addi_apci_3120.c

@@ -125,13 +125,10 @@ static int apci3120_auto_attach(struct comedi_device *dev,
 	s->subdev_flags =
 		SDF_READABLE | SDF_COMMON | SDF_GROUND
 		| SDF_DIFF;
-	if (this_board->i_NbrAiChannel) {
+	if (this_board->i_NbrAiChannel)
 		s->n_chan = this_board->i_NbrAiChannel;
-		devpriv->b_SingelDiff = 0;
-	} else {
+	else
 		s->n_chan = this_board->i_NbrAiChannelDiff;
-		devpriv->b_SingelDiff = 1;
-	}
 	s->maxdata = this_board->i_AiMaxdata;
 	s->len_chanlist = this_board->i_AiChannelList;
 	s->range_table = &range_apci3120_ai;