Merge pull request #259 from jon-tow/headqa-ux

Update `headqa` deprecation warning to display on init only

lm_eval/tasks/headqa.py

@@ -37,4 +37,6 @@ class HeadQAEs(HeadQABase):
 class HeadQAEsDeprecated(HeadQABase):
     DATASET_NAME = "es"
 
+    def __init__(self):
+        super().__init__()
         print("WARNING: headqa is deprecated. Please use headqa_es or headqa_en instead. See https://github.com/EleutherAI/lm-evaluation-harness/pull/240 for more info.")
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