Removed uglify plugin

Author: wtravO

package.json

@@ -25,7 +25,6 @@
     "ts-loader": "^4.3.0",
     "ts-node": "^5.0.1",
     "typescript": "^2.8.3",
-    "uglifyjs-webpack-plugin": "^1.2.5",
     "webpack": "^4.8.3",
     "webpack-cli": "^2.1.4",
     "webpack-dev-server": "^3.1.4"