spi: dt-bindings: samsung: Drop S3C2443

Samsung S3C24xx family of SoCs was removed the Linux kernel in the
commit 61b7f892 ("ARM: s3c: remove all s3c24xx support"), in January
2023.  There are no in-kernel users of remaining S3C24xx compatibles.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Message-ID: <20250830132605.311115-4-krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>