dev-util/apitrace: Remove useless maintainer <description/>

Remove useless/redundant maintainer <description/>. It does not benefit
bug wrangling, and only wastes developer's time on reading it. Few tips:

- assignee/CC is implied by ordering, there is no reason to repeat it,
- we know that maintainer is maintainer (la la la la la),
- most of adjectives for maintainer are of no value and/or are obvious.

dev-util/apitrace/metadata.xml

@@ -4,12 +4,10 @@
 	<maintainer type="person">
 		<email>EoD@xmw.de</email>
 		<name>EoD</name>
-		<description>Maintainer. Assign bugs to him.</description>
 	</maintainer>
 	<maintainer type="person">
 		<email>xmw@gentoo.org</email>
 		<name>Michael Weber</name>
-		<description>Proxy maintainer. CC him on bugs.</description>
 	</maintainer>
 	<maintainer type="project">
 		<email>proxy-maint@gentoo.org</email>