fix(ai-proxy): removed compat fields pre-3.7

[tysoekong]

Add azure fields to removed_fields.lua to address CP/DP version compatibility issue reported at https://konghq.atlassian.net/browse/KAG-4356

Summary

Checklist

• The Pull Request has tests
• A changelog file has been added to CHANGELOG/unreleased/kong or adding skip-changelog label on PR if unnecessary. README.md
• The Pull Request has backports to all the versions it needs to cover
• There is a user-facing docs PR against https://github.com/Kong/docs.konghq.com - PUT DOCS PR HERE

Issue reference

Fix https://konghq.atlassian.net/browse/KAG-4356

[samugi]

similar to my comment here, we should be able to remove logic from checkers now, that makes response_streaming and model.options.upstream_path nil here

[tysoekong]

I'm scared to change stuff that's working right now.

Can we chore this for later?

[tysoekong]

@gruceo

[gruceo]

ok, let's do it later

[samugi]

IMHO: since this is covered by tests, removing checkers logic will confirm things are working the right way (i.e. via the removed_fields) rather than through some other logic, so it would feel safer to me

[gruceo]

if we remove twice, it feels safer to me...

[tysoekong]

I’m scared to remove this now that EE team will test and verify it, in case this package is doing something oddly specific.

I can add to 3.7.1 rollup and make sure it’s still fixed by hand?

Possible issues found

[locao]

Tested and it's OK.

[team-gateway-bot]

Cherry-pick failed for master, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally.

git remote add upstream https://github.com/kong/kong-ee
git fetch upstream master
git worktree add -d .worktree/cherry-pick-13006-to-master-to-upstream upstream/master
cd .worktree/cherry-pick-13006-to-master-to-upstream
git checkout -b cherry-pick-13006-to-master-to-upstream
ancref=$(git merge-base f02d4efc35ff821f66deed7a60e27577865a0e9b 2f708be86283336d3272945daed27f5c9a21bbea)
git cherry-pick -x $ancref..2f708be86283336d3272945daed27f5c9a21bbea

[team-gateway-bot]

Successfully created backport PR for release/3.7.x:

• [backport -> release/3.7.x] fix(ai-proxy): removed compat fields pre-3.7 #13007