From d83880e5ab080cb5c32f72e3f1e707a7919f7007 Mon Sep 17 00:00:00 2001
From: Christoph Groth <christoph.groth@cea.fr>
Date: Wed, 4 Mar 2015 23:48:23 +0100
Subject: [PATCH] remove unneeded method re-definition

---
 kwant/lattice.py | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kwant/lattice.py b/kwant/lattice.py
index c6ee11d6..cbf700d0 100644
--- a/kwant/lattice.py
+++ b/kwant/lattice.py
@@ -673,9 +673,6 @@ class TranslationalSymmetry(builder.Symmetry):
             return (builder.Site(a.family, a.tag + delta, True),
                     builder.Site(b.family, b.tag + delta2, True))
 
-    def to_fd(self, a, b=None):
-        return self.act(-self.which(a), a, b)
-
     def reversed(self):
         """Return a reversed copy of the symmetry.
 
-- 
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