"The Culling": Remove deprecated and unused APIs and code

[chrisdoherty4]

No description provided.

[codecov]

Codecov Report

Merging #654 (a7c40ad) into main (fe2177f) will increase coverage by 3.80%.
The diff coverage is n/a.

❗ Current head a7c40ad differs from pull request most recent head 8446590. Consider uploading reports for the commit 8446590 to get more accurate results

@@            Coverage Diff             @@
##             main     #654      +/-   ##
==========================================
+ Coverage   45.06%   48.86%   +3.80%     
==========================================
  Files          61       20      -41     
  Lines        3557     1017    -2540     
==========================================
- Hits         1603      497    -1106     
+ Misses       1872      514    -1358     
+ Partials       82        6      -76     

Impacted Files	Coverage Δ
cmd/tink-worker/worker/worker.go	0.00% <ø> (ø)
pkg/convert/workflow.go	100.00% <ø> (ø)
server/kubernetes_api_workflow.go	30.15% <ø> (+0.92%)	⬆️
grpc-server/grpc_server.go

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