You can delete a property from your dashboard by taking the following steps:
1. Click the 3 line icon on the top left of your page
2. Click the Properties icon
3. Click any property from the Properties screen will open the Property Detail panel.
Property Detail panel has the following tabs across the top: Graph, Guest, Thresholds, Events, and Settings
4. Click Settings
5. Click Delete Property
This will allow you to delete a property from your dashboard.