drop opencensus packages

[dprotaso]

No description provided.

[knative-prow]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso

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• OWNERS [dprotaso]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.05%. Comparing base (e06d4c9) to head (32ff17c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3227      +/-   ##
==========================================
+ Coverage   74.63%   75.05%   +0.41%     
==========================================
  Files         209      187      -22     
  Lines       12022    10239    -1783     
==========================================
- Hits         8973     7685    -1288     
+ Misses       2770     2314     -456     
+ Partials      279      240      -39     

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