Update files from the datasets library (from 1.6.0)

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

omp.py

@@ -15,7 +15,6 @@
 """The “One Million Posts” corpus is an annotated data set consisting of
 user comments posted to an Austrian newspaper website (in German language)."""
 
-from __future__ import absolute_import, division, print_function
 
 from pathlib import Path