Remove logic for old unsupported pytest

[youtux]

Fixes #579

[codecov]

Codecov Report

Base: 95.32% // Head: 95.43% // Increases project coverage by +0.10% 🎉

Coverage data is based on head (5d8eda3) compared to base (d3e8407).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #580      +/-   ##
==========================================
+ Coverage   95.32%   95.43%   +0.10%     
==========================================
  Files          49       49              
  Lines        1755     1751       -4     
  Branches      190      189       -1     
==========================================
- Hits         1673     1671       -2     
+ Misses         54       53       -1     
+ Partials       28       27       -1     

Impacted Files	Coverage Δ
tests/feature/test_tags.py	100.00% <100.00%> (+3.84%)	⬆️

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