title: How to remove the functionality of printing in the file viewer.js on Prebuilt Pdfjs from mozilla?
body: <p>How to remove the functionality of printing in the file viewer.js on <a href="https://mozilla.github.io/pdf.js/getting_started/#download" rel="nofollow noreferrer">Prebuilt Pdfjs</a> from mozilla?</p>
  
  <p>In this file, too much code(~10K) and I can not understand, how there it is implemented. Help please, at least explain how it is in this file is implemented. Advance thanks.</p>