pinctrl: samsung: drop redundant drvdata assignment

Fix W=1 warning:

  drivers/pinctrl/samsung/pinctrl-samsung.c: In function ‘samsung_gpio_set_direction’:
  drivers/pinctrl/samsung/pinctrl-samsung.c:633:42: warning: variable ‘drvdata’ set but not used [-Wunused-but-set-variable]

Fixes: f9c74474 ("pinctrl: samsung: support a bus clock")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202404300825.6lxLwvUY-lkp@intel.com/Reviewed-by: André Draszik <andre.draszik@linaro.org>
Link: https://lore.kernel.org/r/20240430060304.12332-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

drivers/pinctrl/samsung/pinctrl-samsung.c

@@ -630,11 +630,9 @@ static int samsung_gpio_set_direction(struct gpio_chip *gc,
 	struct samsung_pin_bank *bank;
 	void __iomem *reg;
 	u32 data, mask, shift;
-	struct samsung_pinctrl_drv_data *drvdata;
 
 	bank = gpiochip_get_data(gc);
 	type = bank->type;
-	drvdata = bank->drvdata;
 
 	reg = bank->pctl_base + bank->pctl_offset
 			+ type->reg_offset[PINCFG_TYPE_FUNC];