diff --git a/zipline/gens/utils.py b/zipline/gens/utils.py
index 32a57a4f..2f78dcab 100644
--- a/zipline/gens/utils.py
+++ b/zipline/gens/utils.py
@@ -60,13 +60,3 @@ def assert_trade_protocol(event):
 def assert_datasource_unframe_protocol(event):
     """Assert that an event is valid output of zp.DATASOURCE_UNFRAME."""
     assert event.type in DATASOURCE_TYPE
-
-
-def assert_sort_protocol(event):
-    """Assert that an event is valid input to zp.FEED_FRAME."""
-    assert event.type in DATASOURCE_TYPE
-
-
-def assert_sort_unframe_protocol(event):
-    """Same as above."""
-    assert event.type in DATASOURCE_TYPE