Remove the Emeritus contributors from velero team section

[reasonerjt]

Please indicate you've done the following:

• [x] Accepted the DCO. Commits without the DCO will delay acceptance.
• [ ] Created a changelog file (make new-changelog) or comment /kind changelog-not-required on this PR.
• [ ] Updated the corresponding documentation in site/content/docs/main.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 58.94%. Comparing base (c30d044) to head (6933e66). Report is 16 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #8414 +/- ## ======================================= Coverage 58.94% 58.94% ======================================= Files 367 367 Lines 38926 38926 ======================================= Hits 22945 22945 Misses 14518 14518 Partials 1463 1463 ```

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