[Fix] Fix unittest of TOF-VFI

[Yshuo-Li]

No description provided.

[codecov]

Codecov Report

Merging #873 (49e9392) into master (1f1e9bc) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #873      +/-   ##
==========================================
- Coverage   83.12%   83.08%   -0.04%     
==========================================
  Files         220      220              
  Lines       12453    12453              
  Branches     2017     2017              
==========================================
- Hits        10351    10347       -4     
- Misses       1785     1788       +3     
- Partials      317      318       +1     

Flag	Coverage Δ
unittests	83.04% <ø> (-0.04%)	⬇️

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Impacted Files	Coverage Δ
...edit/models/backbones/vfi_backbones/tof_vfi_net.py	94.18% <0.00%> (-4.66%)	⬇️

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