Remove a redudant "plt.show()" statement

jpli · jpli · commit 2c013f4fd30e · 2016-01-30T10:16:15.000+08:00
diff --git a/doc/users/figures/background2.py b/doc/users/figures/background2.py
@@ -8,4 +8,3 @@
 # lakes=True means plot inland lakes with ocean color.
 m.drawlsmask(land_color='coral',ocean_color='aqua',lakes=True)
 plt.show()
-plt.show()
