title: Install Xdebug extension only for PHP7.1
body: <p>I have PHP 7.1 on Ubuntu 16.04 installed. When I'm trying to install Xdebug by using <code>apt-get install php-xdebug</code>, I'm getting <code>xdebug.ini</code> in directories 5.6, 7.0 and 7.1.</p>
  
  <p>I don't need <code>/php/5.6/mods-available/xdebug.ini</code> and <code>/php/7.0/mods-available/xdebug.ini</code> extensions, because I'm using only PHP 7.1 version.</p>
  
  <p>Any ideas?</p>
  
  <p>Thanks.</p>