Fix : removed unused import.

Author: jbschiratti

pandas/tests/io/test_pickle.py

@@ -20,7 +20,7 @@
 from distutils.version import LooseVersion
 import pandas as pd
 from pandas import Index
-from pandas.compat import is_platform_little_endian, cPickle as pkl
+from pandas.compat import is_platform_little_endian
 import pandas
 import pandas.util.testing as tm
 from pandas.tseries.offsets import Day, MonthEnd