Remove search bar from project/group hook log pages

What does this MR do and why?

Closes #371272 (closed)

Removes the search bar from the project/group hook log pages as it is not needed here.

Screenshots or screen recordings

Type	Before	After
Project
Group

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Switch to the master branch in GDK.
2. If needed, configure a webhook for a project and group.
3. Test the webhook in both the project and group hooks to generate hook logs.
4. Open the test calls via the project and group hook's Recent events table and view the hook log. The search bar is visible.
5. Switch to the hook-logs-hide-searchbar in GDK.
6. Open the test calls via the project and group hook's Recent events table and view the hook log. The search bar should now be gone.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.