update requirements.txt

requirements.txt

+future
 numpy
+onnx
+onnxruntime
 pre-commit
-# =============================================================================
-# DEPRECATION WARNING:
-#
-# The file `requirements.txt` does not influence the package dependencies and
-# will not be automatically created in the next version of PyScaffold (v4.x).
-#
-# Please have look at the docs for better alternatives
-# (`Dependency Management` section).
-# =============================================================================
-#
-# Add your pinned requirements so that they can be easily installed with:
-# pip install -r requirements.txt
-# Remember to also add them in setup.cfg but unpinned.
-# Example:
-# numpy==1.13.3
-# scipy==1.0
-#
 sphinx