auxdisplay: img-ascii-lcd: Remove an unused field in struct img_ascii_lcd_ctx

Remove 'cfg' from struct img_ascii_lcd_ctx. It is unused since commit
7e76aece6f03 ("auxdisplay: Extract character line display core support")

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/auxdisplay/img-ascii-lcd.c

diff --git a/drivers/auxdisplay/img-ascii-lcd.c b/drivers/auxdisplay/img-ascii-lcd.c
index a802678..693339b 100644
--- a/drivers/auxdisplay/img-ascii-lcd.c
+++ b/drivers/auxdisplay/img-ascii-lcd.c
@@ -36,7 +36,6 @@ struct img_ascii_lcd_config {
  * @base: the base address of the LCD registers
  * @regmap: the regmap through which LCD registers are accessed
  * @offset: the offset within regmap to the start of the LCD registers
- * @cfg: pointer to the LCD model configuration
  */
 struct img_ascii_lcd_ctx {
 	struct linedisp linedisp;
@@ -45,7 +44,6 @@ struct img_ascii_lcd_ctx {
 		struct regmap *regmap;
 	};
 	u32 offset;
-	const struct img_ascii_lcd_config *cfg;
 };
 
 /*