Fix list comprehension in test

Author: takluyver

tests/test_calibration.py

@@ -402,7 +402,7 @@ def test_DetectorData_from_identifier():
     assert agipd[0] == agipd['AGIPD00']
     assert agipd.source_names == [
         f'SPB_DET_AGIPD1M-1/DET/{i}CH0:xtdf'
-        for i, name in range(len(agipd.source_names))]
+        for i in range(len(agipd.source_names))]
 
     # PDU
     pdu = agipd[0]