Remove log4js and nugget module

删除log4js以及nugget模块

package.json

@@ -7,9 +7,7 @@
     "extract-zip": "^1.5.0",
     "geoips": "0.0.1",
     "iconv-lite": "^0.4.13",
-    "log4js": "^0.6.29",
     "nedb": "^1.5.1",
-    "nugget": "^2.0.0",
     "superagent": "^1.6.1",
     "superagent-proxy": "^1.0.0",
     "through": "^2.3.8"