MAINTAINERS: remove Peter Geis

The Motorcomm PHY driver is now maintained by the OEM. The driver has
expanded far beyond my original purpose, and I do not have the hardware
to test against the new portions of it. Therefore I am removing myself as
a maintainer of the driver.
Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Link: https://lore.kernel.org/r/20240529185635.538072-1-pgwipeout@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

MAINTAINERS

@@ -15239,7 +15239,6 @@ F:	drivers/staging/most/
 F:	include/linux/most.h
 
 MOTORCOMM PHY DRIVER
-M:	Peter Geis <pgwipeout@gmail.com>
 M:	Frank <Frank.Sae@motor-comm.com>
 L:	netdev@vger.kernel.org
 S:	Maintained