Fix failing simple_datasets_tutorial example (#812)

Author: ArlindKadra

examples/20_basic/simple_datasets_tutorial.py

@@ -56,7 +56,7 @@
 sns.set_style("darkgrid")
 
 
-def hide_current_axis():
+def hide_current_axis(*args, **kwds):
     plt.gca().set_visible(False)