MAINTAINERS: Remove myself as modules maintainer

Luis has done a great job maintaining modules so far. As I'm planning to
take a break from work soon, I think we're ready to transition over fully.

Signed-off-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>