linux: remove todo for credential implementation (#8834)

As commented
[here](https://github.com/zed-industries/zed/pull/8035#issuecomment-1976894590),
this is already done.



Release Notes:
- N/A
09760340caChristian Bergschneider committed on 3/4/2024, 4:57:56 PM· committed by GitHubparent12980dd
1 file changedLine totals unavailable