😒 chore(deps-dev): Remove obsolete packages.

Author: make-github-pseudonymous-again

package.json

@@ -30,10 +30,6 @@
   "devDependencies": {
     "@aureooms/js-itertools": "3.4.0",
     "ava": "3.8.1",
-    "babel-cli": "6.26.0",
-    "babel-polyfill": "6.26.0",
-    "babel-preset-latest": "6.24.1",
-    "codeclimate-test-reporter": "0.5.1",
     "coveralls": "2.13.3",
     "esdoc": "1.1.0",
     "nyc": "15.0.1",