[Feature Flag] Clean up ajax_new_deploy_token
What does this MR do and why?
This merge request cleans up and removes the ajax_new_deploy_token
feature flag. With the removal, creating new deploy tokens becomes AJAX-ified, and therefore no duplicates are created on a page reload.
Resolves #364296 (closed).
MR acceptance checklist
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I have evaluated the MR acceptance checklist for this MR.
Edited by Ahmed Hemdan