tty: serial: samsung_tty: remove dead code

When support for various old platforms was removed in commit
1ea35b35 ("ARM: s3c: remove s3c24xx specific hacks"),
s3c24xx_serial_ops also became unused here because nothing sets port
type TYPE_S3C24XX anymore.

Remove s3c24xx_serial_ops and all the code that's unreachable now.

Fixes: 1ea35b35 ("ARM: s3c: remove s3c24xx specific hacks")
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20231019100901.4026680-1-andre.draszik@linaro.org


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