Frontend: removing old node-linker package

Author: gusthoff

frontend/package.json

@@ -11,7 +11,6 @@
     "js-cookie": "^3.0.5",
     "jszip": "^3.10.1",
     "lato-font": "^3.0.0",
-    "node-linker": "^1.0.1",
     "pygments": "^0.2.1",
     "roboto-fontface": "^0.10.0",
     "whatwg-fetch": "^3.6.20"