Trac #21318: remove unused import (pyflakes)

sagemath · Jul 6, 2021 · 14291eb · 14291eb
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commit 14291eb
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diff --git a/src/sage/combinat/recognizable_series.py b/src/sage/combinat/recognizable_series.py
@@ -1669,7 +1669,6 @@ def one_hadamard(self):
         """
         from sage.matrix.constructor import Matrix
         from sage.modules.free_module_element import vector
-        from sage.rings.integer_ring import ZZ
 
         one = self.coefficient_ring()(1)
         return self(dict((a, Matrix([[one]])) for a in self.alphabet()),