Ensure we don't add unnecessary properties to an object when making requests

This is a transient behavior that has been noted in some cmdlets.
![image](https://user-images.githubusercontent.com/7061532/104784145-80790080-573c-11eb-800f-403f7582ced5.png)

 
[AB#7624](https://microsoftgraph.visualstudio.com/0985d294-5762-4bc2-a565-161ef349ca3e/_workitems/edit/7624)