Staging: vt6655: Remove CARDbSoftwareReset definition.

Remove function CARDbSoftwareReset that is never called, along with
comments related to it.

Signed-off-by: Briana Oursler <briana.oursler@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Link: https://lore.kernel.org/r/8ec491439b947c959fab52e006d9ca26ec3657ab.1585802818.git.briana.oursler@gmail.com


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