chore(prosemirror-adaptor): remove unused files

[civing]

Remove unused files related to the old menu that was replaced with the limel-action-bar.

Review:

• [ ] Commits are atomic
• [ ] Commits have the correct type for the changes made
• [ ] Commits with breaking changes are marked as such

Browsers tested:

(Check any that applies, it's ok to leave boxes unchecked if testing something didn't seem relevant.)

Windows:

• [ ] Chrome
• [ ] Edge
• [ ] Firefox

Linux:

• [ ] Chrome
• [ ] Firefox

macOS:

• [ ] Chrome
• [ ] Firefox
• [ ] Safari

Mobile:

• [ ] Chrome on Android
• [ ] iOS

[github-actions[bot]]

Documentation has been published to https://lundalogik.github.io/lime-elements/versions/PR-2958/

[john-traas]

Looks good. We add the types.ts file back in another PR, but none of the current code in it will persist so easy to just remove it here, and then add it in the other PR.

[lime-opensource]

:tada: This PR is included in version 37.31.0 :tada:

The release is available on:

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

Your semantic-release bot :package::rocket: