feat: graduate ResourceQuotaScopeSelectors to GA - part2

[draveness]

/kind feature
/sig scheduling
/priority important-soon

What this PR does / why we need it:

Graduate ResourceQuotaScopeSelectors to GA

Which issue(s) this PR fixes:

ref: #82480

Does this PR introduce a user-facing change?:

The ResourceQuotaScopeSelectors feature has graduated to GA. The `ResourceQuotaScopeSelectors` feature gate is now unconditionally enabled and will be removed in 1.18.

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

- [KEP]: https://github.com/kubernetes/enhancements/blob/master/keps/sig-scheduling/20190409-resource-quota-ga.md

[draveness]

/assign @liggitt @ravisantoshgudimetla

[ravisantoshgudimetla]

/lgtm

Thanks for the PR @draveness

/cc @ahg-g

[liggitt]

Remove all instances of checking ...Enabled(...ResourceQuotaScopeSelectors) and assume the result is true. This means you can drop any code that only ran when the feature was disabled, like the code in the strategy fields that gated population of that field (and associated unit test)

[draveness]

Remove all instances of checking ...Enabled(...ResourceQuotaScopeSelectors) and assume the result is true. This means you can drop any code that only ran when the feature was disabled, like the code in the strategy fields that gated population of that field (and associated unit test)

Thanks, Jordan. I have addressed the comments

[liggitt]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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