repositories: drop pxrb overlay (no longer maintained)

Closes: #681
Signed-off-by: Sam James <[email protected]>

files/overlays/repositories.xml

@@ -3351,18 +3351,6 @@
  <source type="git">git+ssh://[email protected]/Pross/pross-overlay.git</source>
  <feed>https://github.com/Pross/pross-overlay/commits/master.atom</feed>
  </repo>
- <repo quality="experimental" status="unofficial">
- <name>pxrb</name>
- <description lang="en">Ebuilds of software i use (and maybe you do too)</description>
- <homepage>https://codeberg.org/pxrb/overlay</homepage>
- <owner type="person">
- <email>[email protected]</email>
- <name>Roland</name>
- </owner>
- <source type="git">https://codeberg.org/pxrb/overlay.git</source>
- <source type="git">git+ssh://[email protected]/pxrb/overlay.git</source>
- <feed>https://codeberg.org/pxrb/overlay.rss</feed>
- </repo>
  <repo quality="experimental" status="unofficial">
  <name>pyfa</name>
  <description lang="en">Newest versions of Pyfa (Python fitting assistant for EVE Online)</description>