DEVELOPERS: drop Maxime Ripard from kmsxx maintainers
Maxime Ripard is no longer at Bootlin, his e-mail is bouncing:
<maxime.ripard@bootlin.com>: host spool.mail.gandi.net[217.70.178.1] said: 550
5.1.1 <maxime.ripard@bootlin.com>: Recipient address rejected: User unknown
in virtual mailbox table (in reply to RCPT TO command)
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>