Remove AbstractController::Translation.raise_on_missing_translations added to release note [skip ci]

[akhilgkrishnan]

This PR adds a removal change for AbstractController::Translation.raise_on_missing_translations #47115 in 7.1 release note

Checklist

Before submitting the PR make sure the following are checked:

• This Pull Request is related to one change. Changes that are unrelated should be opened in separate PRs.
• Commit message has a detailed description of what changed and why. If this PR fixes a related issue include it in the commit message. Ex: [Fix #issue-number]
• Tests are added or updated if you fix a bug or add a feature.
• CHANGELOG files are updated for the changed libraries if there is a behavior change or additional feature. Minor bug fixes and documentation changes should not be included.

[rafaelfranca]

This options was never part of public API, we should not document this removal. I'm reverting.

[akhilgkrishnan]

This options was never part of public API, we should not document this removal. I'm reverting.

If that is the case, Can I remove that from changelog as well?