css cleanup, list-reset removed from Tailwind 1.x

[cameronelliott]

This is super duper minor PR, but will clean up a little cruft from the code anyway.
Tailwind 1.x removed list-reset from it's definitions, so specifying this class was a NOP.

[cameronelliott]

I think this is okay, after having a moment of doubt.

Here is the guidance for removing the list-reset util classes:
tailwind upgrade link

After re-reading it, and reviewing source_assets\sass_base.scss, I think this is good after all,
there is some styling of ul/li/ol in _base.scss, but it's just margins (.my-*) so I think it's okay.

[mattstauffer]

Thanks!