title: Hide axis label only, not entire axis, in Pandas plot
body: <p>I can clear the text of the xlabel in a Pandas plot with:</p>
  
  <pre><code>plt.xlabel("")
  </code></pre>
  
  <p>Instead, is it possible to hide the label?</p>
  
  <p>May be something like <code>.xaxis.label.set_visible(False)</code>.</p>