Unused vars.

[yaochaorui]

Fix #236

[codecov]

Codecov Report

Merging #260 (d486191) into master (37bc3f9) will decrease coverage by 0.09%.
The diff coverage is 88.88%.

@@            Coverage Diff             @@
##           master     #260      +/-   ##
==========================================
- Coverage   83.05%   82.96%   -0.10%     
==========================================
  Files         112      112              
  Lines        6456     6456              
  Branches     1029     1029              
==========================================
- Hits         5362     5356       -6     
- Misses        901      905       +4     
- Partials      193      195       +2     

Flag	Coverage Δ
unittests	82.96% <88.88%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...s/datasets/top_down/topdown_posetrack18_dataset.py	34.07% <0.00%> (ø)
mmpose/models/detectors/bottom_up.py	64.06% <0.00%> (ø)
mmpose/core/post_processing/group.py	84.61% <100.00%> (ø)
mmpose/datasets/pipelines/bottom_up_transform.py	89.95% <100.00%> (ø)
mmpose/models/backbones/hrnet.py	89.18% <100.00%> (ø)
mmpose/models/backbones/resnet.py	100.00% <100.00%> (ø)
mmpose/models/detectors/top_down.py	77.91% <100.00%> (ø)
...keypoint_heads/bottom_up_higher_resolution_head.py	100.00% <100.00%> (ø)
...ose/models/keypoint_heads/bottom_up_simple_head.py	76.71% <100.00%> (ø)
...models/keypoint_heads/top_down_multi_stage_head.py	100.00% <100.00%> (ø)
... and 6 more

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