Fix lint

[GT9505]

No description provided.

[codecov]

Codecov Report

Merging #406 (968381e) into master (142922e) will increase coverage by 0.04%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #406      +/-   ##
==========================================
+ Coverage   70.37%   70.42%   +0.04%     
==========================================
  Files         116      116              
  Lines        6113     6113              
  Branches     1181     1181              
==========================================
+ Hits         4302     4305       +3     
+ Misses       1453     1448       -5     
- Partials      358      360       +2     

Flag	Coverage Δ
unittests	70.40% <0.00%> (+0.08%)	⬆️

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Impacted Files	Coverage Δ
mmtrack/apis/train.py	16.66% <0.00%> (ø)
mmtrack/datasets/sot_train_dataset.py	77.77% <0.00%> (-5.06%)	⬇️
mmtrack/datasets/pipelines/transforms.py	87.12% <0.00%> (+2.39%)	⬆️

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