Remove unnecessary dependency torchvision

[Guo-Yunzhe]

Description

Motivation and Context

How has this been tested?

Types of changes

• Maintenance (no change in code, maintain the project's CI, docs, etc.)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.06%. Comparing base (bdc434e) to head (c5cd794).
Report is 4 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #177   +/-   ##
=======================================
  Coverage   80.06%   80.06%           
=======================================
  Files          69       69           
  Lines        3305     3311    +6     
=======================================
+ Hits         2646     2651    +5     
- Misses        659      660    +1     

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