You can uninstall Skype for Business on Mac so you don't see it on your Dock by following few easy steps mentioned below.
To uninstall Skype for Business on Mac
If the above procedure doesn't solve your problem, use the more detailed procedure by visiting at How to uninstall Skype for Business on Mac.
I have been using skype for business for some time now and I am really happy with it. I would like to ask why do you even want to uninstall it. By the way, I had a drone business plan made for me by OGS capital and really liked it a lot. I would recommend using their services to get a business plan.