Update files from the datasets library (from 1.6.0)

Release notes: https://github.com/huggingface/datasets/releases/tag/1.6.0

README.md

@@ -25,11 +25,11 @@ size_categories:
   SQuAD:
   - 100K<n<1M
   SearchQA:
-  - n>1M
+  - 1M<n<10M
   TextbookQA:
   - 10K<n<100K
   TriviaQA:
-  - n>1M
+  - 1M<n<10M
 source_datasets:
   BioASQ:
   - extended|other-BioASQ

multi_re_qa.py

@@ -14,7 +14,6 @@
 # limitations under the License.
 """MultiReQA: A Cross-Domain Evaluation for Retrieval Question Answering Models."""
 
-from __future__ import absolute_import, division, print_function
 
 import json
 import os