Update files from the datasets library (from 1.6.0)

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

README.md

@@ -10,7 +10,10 @@ licenses:
 multilinguality:
 - monolingual
 size_categories:
-- n>1M
+  ollie_lemmagrep:
+  - 10M<n<100M
+  ollie_patterned:
+  - 1M<n<10M
 source_datasets:
 - original
 task_categories:

ollie.py

@@ -14,7 +14,6 @@
 # limitations under the License.
 """Ollie"""
 
-from __future__ import absolute_import, division, print_function
 
 import bz2