Remove ALL THE DEPENDENCIES
Remove ALL THE DEPENDENCIES

Summary:
We can finally remove the underscore dependency, as well as
`find` for dependency finding... because we have no
dependencies! yay!

Depends on D16652

Test Plan:
    make test

Reviewers: alex

Reviewed By: alex

Differential Revision: https://phabricator.khanacademy.org/D16653

Radivarig/simple-markdown,Khan/simple-markdown