gui-apps/koi: drop myself as a maintainer

Signed-off-by: Sebastian Engel <sighunter@gmx.de>

gui-apps/koi/metadata.xml

@@ -1,10 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-	<maintainer type="person">
-		<email>sighunter@gmx.de</email>
-		<name>Sebastian Engel</name>
-	</maintainer>
+	<!-- maintainer-needed -->
 	<upstream>
 		<remote-id type="github">baduhai/Koi</remote-id>
 	</upstream>