Disable webpack minimize (#2618)

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

package.json

@@ -280,7 +280,6 @@
     "@types/tar": "^4.0.4",
     "@types/tcp-port-used": "^1.0.0",
     "@types/tempy": "^0.3.0",
-    "@types/terser-webpack-plugin": "^3.0.0",
     "@types/universal-analytics": "^0.4.4",
     "@types/url-parse": "^1.4.3",
     "@types/uuid": "^8.3.0",
@@ -340,7 +339,6 @@
     "sharp": "^0.26.1",
     "spectron": "11.0.0",
     "style-loader": "^1.2.1",
-    "terser-webpack-plugin": "^3.0.3",
     "ts-jest": "^26.1.0",
     "ts-loader": "^7.0.5",
     "ts-node": "^8.10.2",