Remove usageDataApi feature flag from frontend

What does this MR do and why?

This MR removes usageDataApi feature flag from frontend

It is already removed from backend in MR !143973 (merged)

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

How to set up and validate locally

1. In GDK go to http://127.0.0.1:3000/admin/dev_ops_reports
2. Click on the dev tab.
3. Verify that track_event API is getting called.
4. Before this change, it was not getting called.

Related to #442875 (closed)