chore: remove extra dep and delete extra snapshot

Author: bcarroll22

examples/__tests__/__snapshots__/docs.js.snap

@@ -46,7 +46,6 @@
     "husky": "^1.3.1",
     "intl": "^1.2.5",
     "jest": "24.5.0",
-    "jest-dom": "^3.1.3",
     "jest-fetch-mock": "^2.1.1",
     "jest-in-case": "^1.0.2",
     "metro-react-native-babel-preset": "^0.52.0",