Drop unused attributes

[Stranger6667]

No description provided.

[codecov]

Codecov Report

Merging #1846 (349bee6) into master (fffe23a) will decrease coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1846      +/-   ##
==========================================
- Coverage   98.94%   98.92%   -0.03%     
==========================================
  Files         103      103              
  Lines        8659     8655       -4     
  Branches     1787     1786       -1     
==========================================
- Hits         8568     8562       -6     
- Misses         52       54       +2     
  Partials       39       39              

Files	Coverage Δ
src/schemathesis/cli/output/default.py	99.23% <100.00%> (-0.01%)	⬇️
src/schemathesis/models.py	98.43% <100.00%> (-0.01%)	⬇️
src/schemathesis/runner/events.py	100.00% <ø> (ø)
src/schemathesis/runner/impl/core.py	97.19% <ø> (ø)
src/schemathesis/runner/serialization.py	98.46% <ø> (-0.02%)	⬇️
src/schemathesis/service/serialization.py	100.00% <ø> (ø)

... and 1 file with indirect coverage changes