remove unused

Author: hustcc

package.json

@@ -46,18 +46,11 @@
   },
   "devDependencies": {
     "babel-cli": "^6.26.0",
-    "babel-jest": "^22.4.1",
     "babel-plugin-add-module-exports": "^0.2.1",
     "babel-plugin-transform-class-properties": "^6.24.1",
     "babel-plugin-transform-object-rest-spread": "^6.26.0",
     "babel-preset-env": "^1.6.1",
-    "coveralls": "^3.0.0",
     "cross-env": "^5.1.3",
-    "jest": "^22.4.2",
-    "jest-date-mock": "^1.0.0",
-    "jest-expect": "^0.0.1",
-    "jsdom": "^11.5.1",
-    "mitt": "^1.1.3",
     "rimraf": "^2.6.2",
     "rollup": "^0.58.1",
     "rollup-plugin-babel": "^3.0.4",