Merge pull request #4176 from cpcloud/remove-yahoo-test

TST: remove double call to yahoo finance

Author: cpcloud

pandas/io/tests/test_data.py

@@ -117,8 +117,6 @@ def test_get_quote_series(self):
     @network
     def test_get_quote_string(self):
         df = web.get_quote_yahoo('GOOG')
-        df2 = web.get_quote_yahoo('GOOG')
-        assert_frame_equal(df, df2)
 
     @network
     def test_get_quote_stringlist(self):