Remove with_statement future imports from 2.6 docs.
diff --git a/Doc/library/math.rst b/Doc/library/math.rst
index 6c78104..b111dd1 100644
--- a/Doc/library/math.rst
+++ b/Doc/library/math.rst
@@ -48,6 +48,9 @@
    Return the floor of *x* as a float, the largest integer value less than or equal
    to *x*.
 
+   .. versionchanged:: 2.6
+      Added :meth:`__floor__` delegation.
+
 
 .. function:: fmod(x, y)