Remove Date & Time panel
Top Bar panel, which contained the date and time options, was removed in !92 (merged), because of gnome-control-center!1277 (merged), which migrates these settings to Settings; they will be available in GNOME 45. However, !114 (merged) re-added these options with cb5d29fd into a new Date & Time panel, but these settings are no longer necessary to be in Tweaks.
Edited by Automeris naranja