title: delete a column with awk or sed
body: <p>I have a file with three columns. I would like to delete the 3rd column(in-place editing). How can I do this with awk or sed?</p>
  
  <pre><code>123   abc  22.3
  453   abg  56.7
  1236  hjg  2.3
  </code></pre>
  
  <p>Desired output</p>
  
  <pre><code>123  abc
  453  abg
  1236 hjg 
  </code></pre>