feat: fed-2546 remove no longer used functions

[mdulat]

https://desire2learn.atlassian.net/browse/FED-2546

Remove no longer used endpoints.

[github-actions[bot]]

PR Checklist:

Did you use a semver keyword in a commit message?

• [ ] Yes I used one in at least one of my commits
• [ ] No but I will use a semver keyword in the commit message when I merge and squash

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[d2l-github-release-tokens[bot]]

:tada: This PR is included in version 2.130.0 :tada:

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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