*/*: remove old maintainers from metadata

Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>

dev-python/python-vitrageclient/metadata.xml

@@ -1,13 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-	<maintainer type="project">
-		<email>python@gentoo.org</email>
-	</maintainer>
-	<maintainer type="person">
-		<email>prometheanfire@gentoo.org</email>
-		<name>Matthew Thode</name>
-	</maintainer>
+	<!-- maintainer-needed -->
 	<stabilize-allarches/>
 	<upstream>
 		<remote-id type="pypi">python-vitrageclient</remote-id>