Remove unused import.

diff --git a/src/dunshire/matrices.py b/src/dunshire/matrices.py
index 384b11fdddcb836f2bef455df8210d0a92b07d47..ef3c4c0ba6b8926c67332b242a19c070032319ee 100644 (file)
--- a/src/dunshire/matrices.py
+++ b/src/dunshire/matrices.py
@@ -3,7 +3,6 @@ Utility functions for working with CVXOPT matrices (instances of the
 class:`cvxopt.base.matrix` class).
 """
 
-from copy import copy
 from math import sqrt
 from cvxopt import matrix
 from cvxopt.lapack import gees, syevr