[Proposal/Feature Request] Drop constraint in packages which are to be installed from Github

[SauravMaheshkar]

While trying to create a virtual environment I ran into issues multiple times while installing lpips-pytorch and lpips-tensorflow from their specific commit hash. viz.

noether-networks/video_prediction/requirements.txt

Lines 42 to 43 in c7a65a2

	lpips-pytorch @ git+https://github.com/S-aiueo32/lpips-pytorch.git@d94711e9615d18668bf5a6a9553d4a18493478b5
	lpips-tf @ git+git://github.com/alexlee-gk/lpips-tensorflow.git@87bea09959fe030e6fd4af31bc499dfb7e998f93

Removing the commit hash worked just as well for training purposes. i.e.

git+https://github.com/S-aiueo32/lpips-pytorch.git
git+https://github.com/alexlee-gk/lpips-tensorflow.git

Therefore I propose that version constraints be dropped for lpips-pytorch, lpips-tensorflow and RoboNet.

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PS: Congratulations to the authors for the paper getting into NeurIPS'21 🤩