s390x: step down as general arch maintainer

I haven't really been working on s390x for some time now, and in
practice, I don't have time for it, either. So let's remove myself
from this entry.

Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20221010160957.40779-1-cohuck@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 32e495e..17ff0a0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -84,7 +84,6 @@
 Architecture support
 --------------------
 S390 general architecture support
-M: Cornelia Huck <cohuck@redhat.com>
 M: Thomas Huth <thuth@redhat.com>
 S: Supported
 F: configs/devices/s390x-softmmu/default.mak
@@ -106,7 +105,6 @@
 F: docs/system/s390x/
 F: tests/migration/s390x/
 K: ^Subject:.*(?i)s390x?
-T: git https://gitlab.com/cohuck/qemu.git s390-next
 L: qemu-s390x@nongnu.org
 
 MIPS general architecture support