Suggestion: remove code-suggester, print diff instead

[danielwe]

In addition to creating rather noisy PR threads, code-suggester is fundamentally broken as evidenced by all the nonsense suggestions in #1852. Google does not intend to fix this as explained here: googleapis/code-suggester#505 (comment).

So I thought it might be better to skip the suggestions and simply let the CI action pass/fail depending on whether the PR is compliant. Runic's suggested diff can then be found in the CI logs.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.46%. Comparing base (037dfed) to head (628aa0e).
Report is 354 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2312      +/-   ##
==========================================
+ Coverage   67.50%   75.46%   +7.96%     
==========================================
  Files          31       56      +25     
  Lines       12668    16738    +4070     
==========================================
+ Hits         8552    12632    +4080     
+ Misses       4116     4106      -10     

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[danielwe]

To bolster the case, #2301 is also full of nonsense suggestions such as #2301 (comment)

[vchuravy]

Thanks, take a look at #2313