Update metrics/f1.py

metrics/f1.py

@@ -37,10 +37,6 @@ def f1_score(prediction, ground_truth):
     return f1
 
 
-def exact_match_score(prediction, ground_truth):
-    return normalize_answer(prediction) == normalize_answer(ground_truth)
-
-
 def metric_max_over_ground_truths(metric_fn, prediction, ground_truths):
     scores_for_ground_truths = []
     for ground_truth in ground_truths: