title: Remove every third element from a list
body: <p>In this code piece I print the index numbers in a list.</p>
  
  <pre><code>x = '1 2 3 4 67 8'
  x = list(map(int, x.split()))
  # something here with modulo??
  print(x)
  </code></pre>
  
  <p>Output:
  [1, 2, 3, 4, 67, 8]</p>
  
  <p>I want to output 
  [1, 2, 4, 67]</p>
  
  <p>So the 3th element, 6th, 9th etc...</p>