staging: typec: tcpm: Drop commented out code

Commented out code can be added as needed. Drop it.
Also drop TODO and an obsolete XXX comment.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>