MAINTAINERS: remove myself from super I/O maintainers

I don't get around to do proper full reviews of SIO patches since maybe
3 years, so I better remove myself from the maintainers list for that
part of the coreboot tree. If anyone else wants to take this over,
please go ahead. I can still help with some advice and general ideas in
that area, but even the "odd fixes" status that I downgraded the
maintenance status of that sub-tree to some time ago was a bit too
optimistic.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ic56b710ffe68c6e407786d551cafac698e8bb61d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77063
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 71f6ab2..a06566e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1125,8 +1125,7 @@
 F:	src/security/tpm/
 
 SUPERIOS & SUPERIOTOOL
-M:	Felix Held <felix-coreboot@felixheld.de>
-S:	Odd Fixes
+S:	Orphan
 F:	src/superio/
 F:	util/superiotool/