TST: tweak test case to not skip unnecessarily

Author: changhiskhan

pandas/stats/tests/test_moments.py

@@ -118,11 +118,6 @@ def test_cmov_window_frame(self):
         assert_frame_equal(DataFrame(xp), rs)
 
     def test_cmov_window_na_min_periods(self):
-        try:
-            from scikits.timeseries.lib import cmov_window
-        except ImportError:
-            raise nose.SkipTest
-
         # min_periods
         vals = Series(np.random.randn(10))
         vals[4] = np.nan