Removing GPolylines using google maps

I have a point where a Gpolyline line is drawn from a 开发者_开发问答marker to another point. After I click on it a second time, I want to remove the polyline. How do I remove the line after clicking on the marker a second time?

My pseudo-code is as follows:

  google.maps.event.addListener(markersArray[0], 'click', function() {
     'draw line to point'
  } );

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