Remove check for config file at test time

Author: mfeurer

tests/test_apiconnector.py

@@ -27,11 +27,6 @@ class TestAPIConnector(unittest.TestCase):
     """
 
     def setUp(self):
-        config_file = os.path.expanduser('~/.openml/config')
-        if not os.path.exists(config_file):
-            raise Exception("OpenML config file required to run unit tests. "
-                            "See https://github.com/openml/OpenML/wiki/Client-API")
-
         self.cwd = os.getcwd()
         workdir = os.path.dirname(os.path.abspath(__file__))
         self.workdir = os.path.join(workdir, "tmp")