remove unneeded import

Author: dkrenn

src/sage/combinat/k_regular_sequence.py

@@ -125,7 +125,6 @@ def pad_right(T, length, zero=0):
         (1, 2, 3, 0, 0, 0, 0, 0, 0, 0)
         sage: pad_right((1, 2, 3), 2)
         (1, 2, 3)
-        sage: from sage.combinat.k_regular_sequence import pad_right
         sage: pad_right([(1, 2), (3, 4)], 4, (0, 0))
         [(1, 2), (3, 4), (0, 0), (0, 0)]