Removing unnecessary boilerplate ?

I am stuck with the problem of too heavy and meningless for my users boilerplate.
How can I strip it down to a minimum working version where none additional tools, timers, suns, etc is present, and only (lat, lng) format is used ?
Just tiles, poligons, lines and markers - like a standard map + 3d option.

You can turn off all the widgets from the Viewer constructor options: https://cesium.com/docs/cesiumjs-ref-doc/Viewer.html?classFilter=Viewe

They’re also documented in this part of the Cesium workshop tutorial: https://cesium.com/docs/tutorials/cesium-workshop/#creating-the-viewer