Remove deprecation warning in script

Author: julesghub

Notebooks/Developers/Snippets/Stokes_PoiseuilleFlow.py

@@ -149,12 +149,12 @@
     solver.add_natural_bc( sympy.Matrix([ pb, 0.0]) , 'Right')
 
 
-    solver.add_dirichlet_bc( [0., 0.], "Left",  [1] )  # no slip on the base
-    solver.add_dirichlet_bc( [0., 0.], "Right", [1] )  # no slip on the top
+    solver.add_dirichlet_bc( [None, 0.], "Left" )  # no slip on the base
+    solver.add_dirichlet_bc( [None, 0.], "Right" )  # no slip on the top
 
 
-    solver.add_dirichlet_bc( [0.,0.], "Bottom", [0, 1] )  # no slip on the base
-    solver.add_dirichlet_bc( [0.,0.], "Top",    [0, 1] )  # no slip on the top
+    solver.add_dirichlet_bc( [0.,0.], "Bottom")  # no slip on the base
+    solver.add_dirichlet_bc( [0.,0.], "Top" )  # no slip on the top
 
 
     if uw.mpi.size == 1: