protoc-gen-go-grpc: remove use_generic_streams_experimental flag (defaults to true)

[eshitachandwani]

Fixes task 2 : #1894 - Delete the code to generate stream interfaces for client and server.

Deletes the unused code to make stream generics default.

RELEASE NOTES: None

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.76%. Comparing base (e7a8097) to head (df0fdb8).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7654      +/-   ##
==========================================
- Coverage   81.80%   81.76%   -0.04%     
==========================================
  Files         361      361              
  Lines       27821    27821              
==========================================
- Hits        22758    22747      -11     
- Misses       3862     3867       +5     
- Partials     1201     1207       +6     

see 11 files with indirect coverage changes

[purnesh42H]

@eshitachandwani please try regenerating the protos and run the relevant examples to make sure everything is correct

[arvindbr8]

@eshitachandwani please try regenerating the protos and run the relevant examples to make sure everything is correct

CI should already be doing that

[purnesh42H]

is 332 and 334 an empty line?

[eshitachandwani]

Removed.

[arvindbr8]

changes LGTM, modulo two comments.

Also instead of saying partially fixes #issue, we should say which part of the issue is fixed. From the looks of it, it seems like the only thing pending is a release?

[eshitachandwani]

Also instead of saying partially fixes #issue, we should say which part of the issue is fixed. From the looks of it, it seems like the only thing pending is a release?
Updating the gRPC.io to reflect the stream generics is also pending, but as far as grpc-go is concerned, yes only release is pending.

[eshitachandwani]

@eshitachandwani please try regenerating the protos and run the relevant examples to make sure everything is correct
Done. It checks out correctly.

[purnesh42H]

lgtm

[purnesh42H]

@eshitachandwani please try regenerating the protos and run the relevant examples to make sure everything is correct

CI should already be doing that

that's great. good to know that

[purnesh42H]

I think we need the release notes? @arvindbr8 to confirm

[arvindbr8]

relnotes here are used by the release bot for gRPC releases only. relnotes for the plugin releases are handled manually.