Remove more 1-D stuff from Python unit tests.
Merge branch 'baagaard/remove-1d'

* baagaard/remove-1d:
  Remove more 1-D stuff from Python unit tests.
More updates to Python unit tests to remove 1-D stuff.
Merge branch 'baagaard/remove-1d'

* baagaard/remove-1d:
  More updates to Python unit tests to remove 1-D stuff.
Merge branch 'master' into knepley/upgrade-petsc-interface

* master:
  More updates to Python unit tests to remove 1-D stuff.
  Remove more 1-D stuff from Python unit tests.