remove comments

Author: Matt Sokoloff

tests/data/metrics/iou/data_row/conftest.py

@@ -677,9 +677,3 @@ def point_pair():
                      expected=0.879113232477017)
 
 
-# TODO:
-# Test no predictions and no labels
-# We want the behvaior to be
-# (len(predictions) ==0  and len(labels)> 0) == 0
-# (len(predictions) > 1  and len(labels) == 0) == 0
-# (len(predictions) ==0   and len(labels) == 0) == None