Apply sensai-utils, removing copied code

[opcode81]

Remove the code copied from sensAI, using the new library sensAI-utils instead (which does not add any additional dependencies to Tianshou)

• I have added the correct label(s) to this Pull Request or linked the relevant issue(s)
• I have provided a description of the changes in this Pull Request
• I have added documentation for my changes and have listed relevant changes in CHANGELOG.md
• If applicable, I have added tests to cover my changes.
• I have reformatted the code using poe format
• I have checked style and types with poe lint and poe type-check
• (Optional) I ran tests locally with poe test
  (or a subset of them with poe test-reduced) ,and they pass
• (Optional) I have tested that documentation builds correctly with poe doc-build

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 93.10345% with 2 lines in your changes missing coverage. Please review.

Project coverage is 85.50%. Comparing base (bd74273) to head (fdfefb8).
Report is 1 commits behind head on master.

Files	Patch %	Lines
tianshou/evaluation/rliable_evaluation_hl.py	0.00%	2 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1199      +/-   ##
==========================================
+ Coverage   84.78%   85.50%   +0.71%     
==========================================
  Files         104      102       -2     
  Lines        8983     8649     -334     
==========================================
- Hits         7616     7395     -221     
+ Misses       1367     1254     -113     

Flag	Coverage Δ
unittests	85.50% <93.10%> (+0.71%)	⬆️

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