Staging: comedi: s626.c: Remove unused functions

The functions s626_get_clk_mult, s626_get_clk_mult, s626_get_enc_mode,
s626_set_index_pol are not used anywhere in the kernel so they can be
removed. This also cleans the code. Grepped to find the occurences.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/s626.c

@@ -1167,12 +1167,6 @@ static void s626_set_clk_mult(struct comedi_device *dev,
 	s626_set_mode(dev, chan, mode, false);
 }
 
-static uint16_t s626_get_clk_mult(struct comedi_device *dev,
-				  unsigned int chan)
-{
-	return S626_GET_STD_CLKMULT(s626_get_mode(dev, chan));
-}
-
 /*
  * Return/set the clock polarity.
  */
@@ -1188,12 +1182,6 @@ static void s626_set_clk_pol(struct comedi_device *dev,
 	s626_set_mode(dev, chan, mode, false);
 }
 
-static uint16_t s626_get_clk_pol(struct comedi_device *dev,
-				 unsigned int chan)
-{
-	return S626_GET_STD_CLKPOL(s626_get_mode(dev, chan));
-}
-
 /*
  * Return/set the encoder mode.
  */
@@ -1209,27 +1197,6 @@ static void s626_set_enc_mode(struct comedi_device *dev,
 	s626_set_mode(dev, chan, mode, false);
 }
 
-static uint16_t s626_get_enc_mode(struct comedi_device *dev,
-				  unsigned int chan)
-{
-	return S626_GET_STD_ENCMODE(s626_get_mode(dev, chan));
-}
-
-/*
- * Return/set the index polarity.
- */
-static void s626_set_index_pol(struct comedi_device *dev,
-			       unsigned int chan, uint16_t value)
-{
-	uint16_t mode;
-
-	mode = s626_get_mode(dev, chan);
-	mode &= ~S626_STDMSK_INDXPOL;
-	mode |= S626_SET_STD_INDXPOL(value != 0);
-
-	s626_set_mode(dev, chan, mode, false);
-}
-
 static uint16_t s626_get_index_pol(struct comedi_device *dev,
 				   unsigned int chan)
 {