Clean up unused import.

njsmith · njsmith · commit 852eb361acf2 · 2015-06-08T18:10:59.000-07:00
diff --git a/patsy/categorical.py b/patsy/categorical.py
@@ -36,7 +36,6 @@
 import numpy as np
 import six
 from patsy import PatsyError
-from patsy.state import stateful_transform
 from patsy.util import (SortAnythingKey,
                         safe_scalar_isnan,
                         iterable,
