title: How to remove vertical line from plot?
body: <p>I'm getting a seemingly random vertical line on my plot and I'm unsure how to remove it. Here's the code to create the plot:</p>
  
  <pre><code>import pandas as pd
  import pandas as pd
  import matplotlib.pyplot as plt
  import seaborn as sns; sns.set()
  
  fig = plt.figure()
  
  df=pd.read_csv("Resources/outmerge.csv")
  
  
  print(df.head())
  
  x='month'
  y ='Count'
  sns.set_style("dark", {'axes.grid' : False})
  ax = sns.lineplot('month', 'Count', data=df, marker='o',markersize=8,markers=True, label='2017')
  ax = sns.lineplot('month', 'Count2', data=df, marker='^',markersize=8,markers=True, label='2018')
  ax.grid(False)
  fname='Resources/output.png'
  plt.savefig(fname, dpi=300)
  
  plt.show()
  </code></pre>
  
  <p>And this is the resulting plot. Note the vertical line at x axis: 1. I'm running <code>seaborn 0.9.0</code>.
  <a href="https://i.stack.imgur.com/iJg7u.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iJg7u.png" alt="Output even after setting grid to False"></a></p>