title: Uninstall Packages that aren't used by pip
body: <p>Since the day I started building my website, I installed many packages sometimes to test bunch of codes, sometimes for the project itself (Later I figured out it's not the package needed). But now, when I run <code>pip freeze</code> I have a list of packages, It becomes hard to me to uninstall packages that aren't used. I am about to deploy my website.</p>
  
  <p>I'm using the latest version of <code>pip</code>, and running a Django Project
  I have virtual environment with <code>virtualenv</code> <strong>python 3.5</strong></p>
  
  <p>OS: Linux (Ubuntu)</p>
  
  <p>Many thanks you awesome people!</p>