app-office/upwork: 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.

app-office/upwork/metadata.xml

@@ -4,12 +4,10 @@
     <maintainer type="person">
         <email>titanofold@gentoo.org</email>
         <name>Aaron W. Swenson</name>
-        <description>Assign bugs.</description>
     </maintainer>
     <maintainer type="person">
         <email>stefantalpalaru@yahoo.com</email>
         <name>Stefan Talpalaru</name>
-        <description>CC on bugs.</description>
     </maintainer>
     <longdescription lang="en">
         upwork's desktop application enabling visibility, connectivity,