Accidently created cpp class in blueprint template. How to go back?

Hello,
I’ve created a blueprint mobile project and somewhere along the way i created a cpp class accidently. I deleted the class and everything seems ok, but now i have a source folder in my project folder with build file and all that stuff. I released the game to google play and i have some problems which maybe could be related to the project behaving like a cpp project (different similar game works perfectly). Regardless of what is causing my problems, how do i go back to not having the source folder and project being full blueprint?

If you delete Source, sln, Build and Intermediate you might be okay but I think you’re at a point now where your compiled project expects your source code to be there.

Easiest way around this is to start a new project and copy in your content folder then import your settings/config files if deleting the aforementioned files/folders doesn’t do the trick.