MAINTAINERS: Remove myself as a VKMS maintainer

I haven't been able to properly review the work on the driver for a while.
Hence, this commit removes me from the maintainers list.

Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Acked-by: Louis Chauvet <louis.chauvet@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241014145009.3360515-1-mairacanal@riseup.net
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>

Author: mairacanal

MAINTAINERS

@@ -7470,7 +7470,6 @@ T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
 F:	drivers/gpu/drm/udl/
 
 DRM DRIVER FOR VIRTUAL KERNEL MODESETTING (VKMS)
-M:	Maíra Canal <mairacanal@riseup.net>
 M:	Louis Chauvet <louis.chauvet@bootlin.com>
 R:	Haneen Mohammed <hamohammed.sa@gmail.com>
 R:	Simona Vetter <simona@ffwll.ch>