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-rw-r--r--plot_llh/unitarity.py2
1 files changed, 0 insertions, 2 deletions
diff --git a/plot_llh/unitarity.py b/plot_llh/unitarity.py
index 0600077..c43f430 100644
--- a/plot_llh/unitarity.py
+++ b/plot_llh/unitarity.py
@@ -11,8 +11,6 @@ Calculation follows from DOI 10.1103/PhysRevD.98.123023
from __future__ import absolute_import, division
-from copy import deepcopy
-
import numpy as np
def Sp(x, y, z):