Remove Storybook

[silochad]

When setting up the Beanstalk UI, we added Storybook with the idea that it'd help us easily create & test reusable React components. During the first wave of dev we stopped using it due to time constraints. It's still set up, but occasionally causes issues like this one #323 which are quite frustrating.

At this point doesn't seem like a great use of time to go back and put components in Storybook. However it may be useful with snapshot testing at some point if we want to get granular about testing UI visual behavior.

Leaving this issue as a placeholder for discussion about whether to remove