Drop Ping Time Duplicates

[ctuguinay]

Addresses the duplicate ping time part of #1374

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.44%. Comparing base (9f56124) to head (bd443a4).
Report is 136 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1382      +/-   ##
==========================================
- Coverage   83.52%   80.44%   -3.08%     
==========================================
  Files          64       18      -46     
  Lines        5686     3089    -2597     
==========================================
- Hits         4749     2485    -2264     
+ Misses        937      604     -333     

Flag	Coverage Δ
unittests	80.44% <100.00%> (-3.08%)	⬇️

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[ctuguinay]

@leewujung This should be ready for review

[leewujung]

@ctuguinay : Thanks for looking into this. I agree this would address the problem, but one thing I think we should check is if the entries with duplicated ping_time actually contain the same data. If not, the duplication of ping_time does not make sense, but dropping it would also mean that we lose data?

Also, the same as my comment on another PR, that if both files you used in the tests have the same issues, let's just keep one of them to avoid our test suite getting too big.