Fix pytest collection warning

[sl0thentr0py]

fixes

PytestCollectionWarning: cannot collect test class 'TestSpanClientReports' because it has a __init__ constructor (from: tests/test_client.py)
    class TestSpanClientReports:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.72%. Comparing base (6f71a1b) to head (0ec3c6c).
Report is 3 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4574      +/-   ##
==========================================
- Coverage   80.74%   80.72%   -0.02%     
==========================================
  Files         156      156              
  Lines       16483    16483              
  Branches     2801     2801              
==========================================
- Hits        13309    13306       -3     
+ Misses       2296     2295       -1     
- Partials      878      882       +4     

see 4 files with indirect coverage changes