Update babel-runtime config (react-static#700)

Make changes to remove errors due to babel-runtime config on `yarn start`

<!--- Provide a general summary of your changes in the Title above -->

## Description
<!--- Describe your changes in detail -->
Remove two key/values that throw errors when set with babel version pulled in and prevent builds.

## Types of changes
<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->
- [ ] Refactoring/add tests (refactoring or adding test which isn't a fix or add a feature)
- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

## Checklist:
<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
- [ ] My change requires a change to the documentation.
  - [ ] I have updated the documentation accordingly.
- [ ] My changes have tests around them

Author: mjsisley