Remove redundant mypy overrides

[felixonmars]

pkg_resources is no longer in use, so it's not needed to override anymore.

[roniemartinez]

Thanks @felixonmars

Some errors need checking or the config needs some update

pyproject.toml: toml config file contains a [[tool.mypy.overrides]] section, but no module to override was specified.
tests/test_converter.py:3: error: Skipping analyzing "xmljson": module is installed, but missing library stubs or py.typed marker  [import]

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (a46ca9c) 100.00% compared to head (0ab69fe) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #412   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            7         7           
  Lines          938       938           
=========================================
  Hits           938       938           

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[felixonmars]

Some errors need checking or the config needs some update

Oops. Fixed now :)

[roniemartinez]

Awesome! Thank you.