title: How to get rid of grid lines when plotting with Seaborn + Pandas with secondary_y
body: <p>I'm plotting two data series with Pandas with seaborn imported. Ideally I would like the horizontal grid lines shared between both the left and the right y-axis, but I'm under the impression that this is hard to do.</p>
  
  <p>As a compromise I would like to remove the grid lines all together. The following code however produces the horizontal gridlines for the secondary y-axis.</p>
  
  <pre><code>import pandas as pd
  import numpy as np
  import seaborn as sns
  
  
  data = pd.DataFrame(np.cumsum(np.random.normal(size=(100,2)),axis=0),columns=['A','B'])
  data.plot(secondary_y=['B'],grid=False)
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/4l0Z2.png" alt="gridlines that I want to get rid of"></p>