MAINTAINERS: sfc: remove Martin Habets

Martin has left AMD and no longer works on the sfc driver.

Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://patch.msgid.link/20250307154731.211368-1-edward.cree@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: Edward Cree

MAINTAINERS

@@ -21502,7 +21502,6 @@ F:	include/linux/slimbus.h
 
 SFC NETWORK DRIVER
 M:	Edward Cree <ecree.xilinx@gmail.com>
-M:	Martin Habets <habetsm.xilinx@gmail.com>
 L:	netdev@vger.kernel.org
 L:	linux-net-drivers@amd.com
 S:	Maintained