title: how to remove a div with same ids but display='block' and display='none' in JAVascript
body: <p>I have more than 1 divs
  with same id, but one has diplay='block'
  and others have display='none'.</p>
  
  <p>I want to delete all the divs which have display='none'.</p>
  
  <p>Kindly tell the easiest way.</p>