don't print list of statistics keys

bfps/test/test_Parseval.py

@@ -28,7 +28,6 @@ def main():
              sys.argv[1:])
     c.compute_statistics()
     print((c.statistics['energy(t)'] - c.statistics['renergy(t)']) / c.statistics['renergy(t)'])
-    print(list(c.statistics.keys()))
     energyk = c.statistics['energy(k)']
     nshell = c.get_data_file()['kspace/nshell'].value
     renergy = np.mean(c.statistics['renergy(t)'])