hw/sd/sdcard: Remove ACMD6 handler for SPI mode

There is no ACMD6 command in SPI mode, remove the pointless
handler introduced in commit 946897ce18 ("sdcard: handles
more commands in SPI mode"). Keep sd_cmd_unimplemented()
since we'll reuse it later.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Tested-by: Cédric Le Goater <clg@redhat.com>
Message-Id: <20240621080554.18986-8-philmd@linaro.org>
1 file changed