staging: comedi: das_08: remove the unneeded 8254 variables and defines

Now that the driver is using the 8253 helper functions, remove the
unused variables in the i8254_struct as well as the unused defines
for the 8254 register offsets.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/das08.h

@@ -50,17 +50,9 @@ struct das08_board_struct {
 };
 
 struct i8254_struct {
-	int channels;		/*  available channels. Some could be used internally. */
-	int logic2phys[3];	/*  to know which physical channel is. */
-	int mode[3];		/*  the index is the real counter. */
 	unsigned int iobase;
 };
 
-#define I8254_CNT0 0
-#define I8254_CNT1 1
-#define I8254_CNT2 2
-#define I8254_CTRL 3
-
 struct das08_private_struct {
 	unsigned int do_mux_bits;	/*  bits for do/mux register on boards without separate do register */
 	unsigned int do_bits;	/*  bits for do register on boards with register dedicated to digital out only */