Remove six

[p1c2u]

No description provided.

[codecov]

Codecov Report

Merging #28 (95ee20f) into master (0182620) will decrease coverage by 0.41%.
The diff coverage is 18.18%.

@@            Coverage Diff             @@
##           master      #28      +/-   ##
==========================================
- Coverage   62.50%   62.08%   -0.42%     
==========================================
  Files           6        6              
  Lines         184      182       -2     
  Branches       39       39              
==========================================
- Hits          115      113       -2     
  Misses         54       54              
  Partials       15       15              

Impacted Files	Coverage Δ
openapi_schema_validator/_format.py	58.33% <10.00%> (-0.50%)	⬇️
openapi_schema_validator/_types.py	100.00% <100.00%> (ø)

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