message: remove all emotion dependencies
diff: "babel-plugin-macros": "2.4.2",
  "classnames": "^2.2.5",
  "d3-shape": "^1.2.0",
  - "emotion": "9.2.8",
  "nanoid": "2.0.0",
  "primer-colors": "1.0.1",
  "primer-markdown": "3.7.9",
  "primer-typography": "1.0.1",
  "react": "16.4.2",
  "react-dom": "16.4.2",
  - "react-emotion": "9.2.8",
  "styled-system": "3.1.3",
  "system-components": "3.0.1"
  },
  "@zeit/next-mdx": "1.1.0",
  "babel-core": "7.0.0-bridge.0",
  "babel-plugin-add-react-displayname": "0.0.5",
  - "emotion-server": "9.2.8",
  - "emotion-theming": "9.2.6",
  "enzyme": "3.5.1",
  "enzyme-adapter-react-16": "1.5.0",
  "eslint": "4.19.1",
  