title: How to remove "X-Runtime" header from Nginx/Passenger?
body: <p><strong>EDIT</strong> -- the solution I posted below probably applies to any server (Nginx/Apache/anything else), because this header is set in Rails itself.</p>
  
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  <p>Anyone know where the "X-Runtime" header can be removed in Nginx &amp; Passenger?</p>
  
  <p>I've grepped the source files and haven't found anything yet, but I'd like to get rid of it for security since it's a telltale sign of Rails.</p>