Remove backfill workflow for Docker images

[witoszekdev]

Workflow was run, we released missing images (see: https://github.com/saleor/saleor-dashboard/pkgs/container/saleor-dashboard/681185527?tag=3.22.31) - we can now delete it

[changeset-bot]

⚠️ No Changeset found

Latest commit: dce6791

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 42.58%. Comparing base (1739498) to head (dce6791).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6332   +/-   ##
=======================================
  Coverage   42.58%   42.58%           
=======================================
  Files        2495     2495           
  Lines       43305    43305           
  Branches     9851     9851           
=======================================
  Hits        18442    18442           
  Misses      24826    24826           
  Partials       37       37           

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