When performing any action via BIM Track in Revit, views and textures associated to BIM Track will be automatically generated. It is then sometimes necessary to clear all traces of your BIM Track project if you want to start with a fresh project.
In the project tree of Revit, perform a search for ‘BIMTrack' using Ctrl-F:
Right click on all BIM Track items and delete them. You can also delete BIM Track’s views in Navisworks, although you will find those in the Saved Viewpoints window:
Under the Manage tab, in the Materials window, delete the BIM1-Half Tone Red element:
If you want to purge BIM Track elements for a centralized file shared by other users, make sure that when you apply these steps, you are logged into your Autodesk account (your name should appear at the top right of the screen).