title: Remove rows if group contains an empty column
body: <p>I have multiple rows in my dataframe and a column called 'name'.</p>
  
  <p>I want to groupby 'name' and remove every item in the group, if any row has an empty column (either, nan, none or an empty string).</p>
  
  <p>How can I achieve this?</p>
  
  <p>Input</p>
  
  <pre><code>       name    c0  c1  c2
  193556   INFO    1       
  273142    OMN    1  1   1
  256278    OMN    1  1   1
  41165    INFO    1  1   1
  339649   INFO    1  1   1
  </code></pre>
  
  <p>Output</p>
  
  <pre><code>       name    c0  c1  c2
  273142    OMN    1  1   1
  256278    OMN    1  1   1
  </code></pre>