drop custom header for readiness and liveness probe

[izabelacg]

Changes

• drop custom header k-kubelet-probe for readiness and liveness probe

Part of knative/serving#14981

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.66%. Comparing base (f57ffcf) to head (a831868).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1292      +/-   ##
==========================================
+ Coverage   80.51%   80.66%   +0.14%     
==========================================
  Files          26       26              
  Lines        2022     2022              
==========================================
+ Hits         1628     1631       +3     
+ Misses        301      299       -2     
+ Partials       93       92       -1     

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[izabelacg]

/retest

[dprotaso]

/lgtm
/approve

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso, izabelacg

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