Remove large openie model file (#1756)

* removing large file

* using srl test model instead of the large Open IE file

Author: gabrielStanovsky

allennlp/tests/fixtures/open_information_extraction/serialization/model.tar.gz

@@ -13,7 +13,7 @@ def test_uses_named_inputs(self):
         }
 
         archive = load_archive(self.FIXTURES_ROOT / \
-                               'open_information_extraction' / 'serialization' / 'model.tar.gz')
+                               'srl' / 'serialization' / 'model.tar.gz')
         predictor = Predictor.from_archive(archive, 'open-information-extraction')
 
         result = predictor.predict_json(inputs)
@@ -44,7 +44,7 @@ def test_prediction_with_no_verbs(self):
         """
         input1 = {"sentence": "Blah no verb sentence."}
         archive = load_archive(self.FIXTURES_ROOT / \
-                               'open_information_extraction' / 'serialization' / 'model.tar.gz')
+                               'srl' / 'serialization' / 'model.tar.gz')
         predictor = Predictor.from_archive(archive, 'open-information-extraction')
 
         result = predictor.predict_json(input1)