First check

• I added a descriptive title to this issue.
• I used the GitHub search to find a similar issue and didn't find it.
• I refreshed the page and this issue still occurred.
• I checked if this issue was specific to the browser I was using by testing with a different browser.

Bug summary

This field is pre-populated, when most users don't need a value.
I don't think a suggested greyed-out value is necessary.

Reproduction

Go to the page to create a BitBucket Credentials block in the UI.

Error

Browsers

• Chrome
• Firefox
• Safari
• Edge

Prefect version

No response

Additional context

No response