pinctrl: samsung: Drop unused S3C24xx driver data

Drop unused declarations after S3C24xx SoC family removal in the commit
61b7f892 ("ARM: s3c: remove all s3c24xx support").

Fixes: 1ea35b35 ("ARM: s3c: remove s3c24xx specific hacks")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250830111657.126190-3-krzysztof.kozlowski@linaro.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>