fix:去除package.json内的fs包 (#311)

Author: 二一

package.json

@@ -32,7 +32,6 @@
     "eslint-plugin-node": "^6.0.1",
     "eslint-plugin-promise": "^3.8.0",
     "eslint-plugin-standard": "^3.1.0",
-    "fs": "0.0.1-security",
     "gulp": "^4.0.2",
     "gulp-clean-css": "^3.9.3",
     "gulp-less": "^4.0.0",