Drop support for comma separators in enums and other cleanups

[bcardiff]

• Cleanup code
• Cleanup unneeded primitives
• Remove support for commas inside enums (Follow up from Remove comma as enum member delimiter #7618)

[straight-shoota]

Shouldn't removal of compiler support for cast and usage in stdlib be in separate releases? Otherwise 0.33.0 compiler won't be able to compile 0.32.1 stdlib.

[bcardiff]

0.32.1 has both primitives, this is the required step to keep things moving forward.

The source of 0.33.0 after this PR uses convert and no longer uses :cast. Hence there is no future need to support :cast

[RX14]

We really should make PRs/issues for removing things we deprecate and attach them to future milestones ahead of time so we don't forget

[bcardiff]

They will always be subject to be outdated when the time comes.

I would use a next/pinned milestone or even a future version milestone created ahead of time to flag those PRs. Yet they would be an intention, but not a hard commitment to be included in that release.

[straight-shoota]

I don't think scheduling this is really important. Whether we remove a deprecated feature in the scheduled release or a few later doesn't make a huge difference. If all, delayed removal gives developers more time to update their code.

Having such collective cleanups from time to time seems perfectly fine to me.

[straight-shoota]

Thanks @bcardiff ❤️