zeta2: Remove `experimental_edit_prediction_context_retrieval` setting (#47783) (cherry-pick to preview) (#47787)

zed-zippy[bot] and Ben Kunkle created

Cherry-pick of #47783 to preview

----
Closes #ISSUE

Release Notes:

- N/A *or* Added/Fixed/Improved ...

Co-authored-by: Ben Kunkle <ben@zed.dev>

Change summary

0 files changed

Detailed changes