title: Remove one value from a NumPy array
body: <p>I am trying to all rows that only contain zeros from a NumPy array. For example, I want to remove <code>[0,0]</code> from</p>
  
  <pre><code>n = np.array([[1,2], [0,0], [5,6]])
  </code></pre>
  
  <p>and be left with:</p>
  
  <pre><code>np.array([[1,2], [5,6]])
  </code></pre>