feat!: remove deprecations

[griest024]

BREAKING CHANGES: deprecations slated for removal in 0.81.0 have been removed

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/graycoreio/daffodil/blob/develop/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

Fixes: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[x] Yes
[ ] No

symbols marked for deprecations have been removed, follow the deprecation message for migration instructions

Other information

ordinarily there would be a separate PR for each removal but these symbols have been deprecated for years. A bulk removal shouldn't impact app devs.