chore(npm): update deps

Author: azu

.babelrc

@@ -34,12 +34,8 @@
     "textlintrule"
   ],
   "devDependencies": {
-    "babel-cli": "^6.9.0",
-    "babel-preset-es2015": "^6.9.0",
     "babel-preset-jsdoc-to-assert": "^2.0.1",
     "babel-preset-power-assert": "^1.0.0",
-    "babel-register": "^6.9.0",
-    "mocha": "^2.5.3",
     "power-assert": "^1.4.1",
     "textlint-scripts": "^1.2.2"
   },