Fix merge conflict

Author: blink1073

lib/matplotlib/backends/web_backend/mpl.js

@@ -143,7 +143,6 @@ mpl.figure.prototype._init_canvas = function() {
     // Throttle sequential mouse events to 1 every 20ms.
     rubberband.mousemove('motion_notify', mouse_event_fn);
 
-
     rubberband.mouseenter('figure_enter', mouse_event_fn);
     rubberband.mouseleave('figure_leave', mouse_event_fn);