DEV: Remove .flake8

[j-t-1]

Also sort the ignore list.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.43%. Comparing base (8245fbc) to head (5ce98b4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2895   +/-   ##
=======================================
  Coverage   96.43%   96.43%           
=======================================
  Files          52       52           
  Lines        8726     8726           
  Branches     1721     1721           
=======================================
  Hits         8415     8415           
  Misses        182      182           
  Partials      129      129           

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[stefan6419846]

The exclude should not hurt IMHO. Nevertheless, the file should be unused after #2572 and could probably be removed completely.

[j-t-1]

Deleted the file. Feel free to change the commit message, which is now:

pypdf moved from flake8 to ruff. This is a continuation of #2572.