MAINTAINERS: Drop myself as maintainer of TYPEC port controller drivers

I am no longer involved in Type-C development and not really current on its
status and progress. Recently I have been doing more damage than good.
It is time to go.

Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240215202039.1982539-1-linux@roeck-us.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>