Redux cleanup

[fallon7284]

IMPORTANT: Please do not create a Pull Request without creating an issue first.

Any change needs to be discussed before proceeding. Failure to do so may result in the rejection of the pull request.

Do not change the following line aside from replacing YOUR-ISSUE-HERE with the issue this PR fixes

fixes #566

Please provide enough information so that others can review your pull request:

Explain the details for making this change. What existing problem does the pull request solve?

This PR cleans up a lot of redundant, unused code in our redux directory. It eliminates unused actions and reducers /navigation, /temperature, /behavior and it combines disclaimer answer state and actions within onboarding reducer and action files. Hopefully this contributes to clarity of our codebase and readability in our redux logs.

Test plan (required)

Unused redux code was not being tested, so didn't require any changes to tests.

Final Checklist

• [X] Have you bumped the version in package.json?
  • Second decimal for major change, third decimal for minor change. This can go past 10 i.e. 1.0.9 !=> 1.1.0, 1.0.9 => 1.0.10
  • Read here for more info
• [X] Have you added any new tests necessary?
• [X] Is your PR rebased off the most current master?
• [ ] Have you squashed all commits, or if you will merge will you squash all commits?
• [X] Did you use yarn, not npm?
• [X] Did you use Material-UI wherever possible?
• [X] Did you format according to Prettier?
• [X] Did you run all of your most recent changes locally to make sure everything is working?