Remove or uninstall library previously added : cocoapods

I added an external framework via cocoapods into my iOS application. How can i remove that library from the project?

Solution

The unwanted side effects of simple folder delete or installing over existing installation have been removed by a script written by Kyle Fuller - deintegrate and here is the proper workflow:

Install clean:
```
sudo gem install cocoapods-clean
```
Run deintegrate in the folder of the project:
```
pod deintegrate
```
~~Clean~~ (this tool is no longer available):
```
pod clean
```
Modify your podfile (delete the lines with the pods you don't want to use anymore) and run:
```
pod install
```

Done.