Remove deprecated functional option (internal/net/grpc)

[vankichi]

Description:

SSIA

Related Issue:

Versions:

• Go Version: 1.19.2
• Docker Version: 20.10.8
• Kubernetes Version: 1.22.0
• NGT Version: 1.14.8

Checklist:

• I have read the CONTRIBUTING document and completed our CLA agreement.
• I have checked open Pull Requests for the similar feature or fixes?

Special notes for your reviewer:

[vdaas-ci]

[CHATOPS:HELP] ChatOps commands.

• 🙆‍♀️ /approve - approve
• 💌 /changelog - replace the PR body by changelog details
• 🍱 /format - format codes and add licenses
• ✅ /gen-test - generate test codes
• 🏷️ /label - add labels
• ⏪ /rebase - rebase main
• 🔚 2️⃣ 🔚 /label actions/e2e-deploy - run E2E deploy & integration test

[codecov]

Codecov Report

Base: 30.49% // Head: 30.51% // Increases project coverage by +0.02% 🎉

Coverage data is based on head (e642160) compared to base (95d169d).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1877      +/-   ##
==========================================
+ Coverage   30.49%   30.51%   +0.02%     
==========================================
  Files         367      367              
  Lines       33821    33821              
==========================================
+ Hits        10313    10322       +9     
+ Misses      23092    23086       -6     
+ Partials      416      413       -3     

Impacted Files	Coverage Δ
internal/net/grpc/option.go	4.93% <ø> (ø)
internal/net/http/middleware/timeout.go	91.11% <0.00%> (-2.23%)	⬇️
internal/info/info.go	88.42% <0.00%> (ø)
internal/worker/worker.go	83.07% <0.00%> (+0.76%)	⬆️
pkg/agent/core/ngt/service/option.go	91.41% <0.00%> (+1.84%)	⬆️
...nt/core/ngt/service/vqueue/uninserted_index_map.go	73.65% <0.00%> (+3.22%)	⬆️

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[hlts2]

LGTM