Question: How to remove projects from qt creator, I can delete files from project view but I cant delete my .pro file and my main project folder.

Answer: 
It's not possible to remove .pro files from QtCreator. There is an option as shown on screenshot, but it doesn't work.

![enter image description here](https://i.stack.imgur.com/c4rxS.png)

You're not able to completely remove your project for QtCreator. For this you'll have to close project first and manually remove whole folder with .pro file. But to be serious no .pro file means no Qt project at all. qmake won't be able build project for you without it.
I found a way, delete the build-*projectname* folder its in the directory in which your project was saved.