Remove asserts and fix docstring

Author: Kevin Kim

labelbox/schema/dataset.py

@@ -226,7 +226,7 @@ def _create_descriptor_file(self, items, max_attachments_per_data_row=None):
         >>>     {DataRow.row_data:"/path/to/file1.jpg"},
         >>>     "path/to/file2.jpg",
         >>>     {"tileLayerUrl" : "http://", ...}
-        >>>     {"conversation" : "{}", ...}
+        >>>     {"conversationalData" : [...], ...}
         >>>     ])
 
         For an example showing how to upload tiled data_rows see the following notebook:

tests/integration/conftest.py

@@ -191,15 +191,12 @@ def iframe_url(environ) -> str:
 @pytest.fixture
 def sample_video() -> str:
     path_to_video = 'tests/integration/media/cat.mp4'
-    assert os.path.exists(path_to_video)
     return path_to_video
 
 
 @pytest.fixture
 def sample_bulk_conversation() -> list:
     path_to_conversation = 'tests/integration/media/bulk_conversation.json'
-    assert os.path.exists(path_to_conversation)
-
     with open(path_to_conversation) as json_file:
         conversations = json.load(json_file)
     return conversations