Remove unnecessary 'show' call

Author: dmcdougall

examples/mplot3d/trisurf3d_demo2.py

@@ -24,7 +24,6 @@
 ax.plot_trisurf(x, y, z, triangles=tri.triangles, cmap=plt.cm.Spectral)
 
 ax.set_zlim(-1, 1)
-plt.show()
 
 # First create the x and y coordinates of the points.
 n_angles = 36