diff --git a/tests/test_adb_manager.py b/tests/test_adb_manager.py
index f8342fbe..58b7fcb4 100644
--- a/tests/test_adb_manager.py
+++ b/tests/test_adb_manager.py
@@ -65,10 +65,6 @@ def __init__(self, *args, **kwargs):
         self._acquired = False
 
 
-def return_empty_list(*args, **kwargs):
-    return []
-
-
 class TestADBPython(unittest.TestCase):
     """Test the `ADBPython` class."""