dt-bindings: serial: drop unsupported samsung bindings

Now that no implementation exists anymore for
samsung,s3c24(1[02]|40)-uart, remove those bindings from here as well.

Signed-off-by: André Draszik <andre.draszik@linaro.org>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231019100639.4026283-2-andre.draszik@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>