Revert "editor: Add action to move between snippet tabstop positions" (#42008)

Reverts zed-industries/zed#41466

This PR would add "in_snippet" context when there wasn't a completion
menu visible, causing some actions to not be hit.

Release Note:

- N/A
27fb1098faAnthony Eid committed on 11/5/2025, 4:16:39 PM· committed by GitHubparent0f5a63a
7 files changedLine totals unavailable