title: How to remove an data/models from nltk dowloader?
body: <p>I installed some NLTK-packages in python3 NLTK (via <code>nltk.download()</code>), tried them and -not needing them- want to remove them now. </p>
  
  <p>How can I remove for example the package <code>large_grammars</code> from my NLTK-installation? (I do not want to remove the complete NLTK-installation!)</p>