docs: Remove settings json snippet from agent-panel.md (#57807)

Follow up to #57375. Did not realise that we don't put JSON snippets in
our docs anymore

Release Notes:

- N/A
c171bbac44Bennet Bo Fenner committed on 5/27/2026, 11:23:14 AM· committed by GitHubparentf839f8e
1 file changedLine totals unavailable