This state has been removed from the background. It was used for the
old UI, and has been unused for some time. A migration has been added
to delete this state as well.
The action creator responsible for updating this state has been removed
from the UI as well, along with the `callBackgroundThenUpdateNoSpinner`
convenience function, which was only used for this action.
* Use @metamask/eslint-config@1.1.0
* Use eslint-plugin-mocha@6.2.2
* Mark root ESLint config as root
* Update Mocha ESLint rules with shared ESLint config
The `seedWords` state was removed from the PreferencesController
recently in #6920. That state hadn't been used in some time, and there
was a long period during which `seedWords` was periodically scrubbed
from the state, so it's highly unlikely that it still exists in state
for most users. It's hard to guarantee that it _doesn't_ though,
especially if a user hasn't opened MetaMask in a few months.
