Feature Request remove the toggle for released from the main assignment list

[bnmnetp]

We have changed the logic and this can be removed from the main list now.

[morozov-av]

Hi @bnmnetp Here is a PR: https://github.com/RunestoneInteractive/rs/pull/1191/changes

Just one question: What value should be set by default(Assignment creation)? Or I should remove this field entirely?