chore(eslint): remove unused airbnb config

[overbalance]

Which problem is this PR solving?

• Shrink npm install size by removing unused eslint config.

Short description of the changes

• Removed the Airbnb base eslint config that was added in 2022 but is no longer in use.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.55%. Comparing base (c7a91fc) to head (33a1fc5).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2998   +/-   ##
=======================================
  Coverage   89.55%   89.55%           
=======================================
  Files         193      193           
  Lines        9698     9698           
  Branches     2011     2011           
=======================================
  Hits         8685     8685           
  Misses       1013     1013           

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