title: Hide legend of WPF Toolkit chart with more than one data series
body: <p>I am trying to use charts from the WPF Toolkit (with LineSeries) and I don't want a legend at all.  I need this since I have 10 such charts each with data from a different source and I would like to draw one legend for all 10, to save screen real estate.</p>
  
  <p>By default the legend appears the moment you add a second LineSeries.  Is there any way to prevent it from even appearing?</p>
  
  <p>Thanks,</p>
  
  <p>sprite.</p>