Remove trafficop for green only

[bluewave41]

One-line summary

Replaces trafficop fundraiser with just the green variant as the winner.

Issue / Bugzilla link

https://mozilla-hub.atlassian.net/browse/WT-1131

Testing

• Checkout this PR
• Run the site
• The ?v= variant from the URL should be gone
• The green fundraiser banner should render
• It should link to https://www.mozillafoundation.org/en/?form=26MY-PBW

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.72%. Comparing base (d32e94a) to head (18a4eb8).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #17245      +/-   ##
==========================================
+ Coverage   81.89%   82.72%   +0.83%     
==========================================
  Files         181      178       -3     
  Lines        9619     9373     -246     
==========================================
- Hits         7877     7754     -123     
+ Misses       1742     1619     -123     

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