<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Work on this issue](https://contributors.gitlab.com/manage-issue?action=work&projectId=278964&issueIid=455584) - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=455584) </details> <!--IssueSummary end--> ### Summary In https://gitlab.com/gitlab-org/gitlab/-/issues/430775 we added the ability find a file without leaving the current page. This _should_ make the [`find_file` route](https://gitlab.com/gitlab-org/gitlab/-/find_file/master?ref_type=heads) redundant. This MR suggests removing the `find_file` route and the related frontend code if it is not used anymore. :warning: **Important: double-check that this route and related frontend code is not used anywhere before removing it.**