we do not need k3d anymore -- instead it is loaded from cdn

Author: williamstein

src/packages/frontend/package.json

@@ -111,7 +111,6 @@
     "js-cookie": "^2.2.1",
     "json-stable-stringify": "^1.0.1",
     "jsonic": "^1.0.1",
-    "k3d": "^2.16.1",
     "katex": "^0.16.10",
     "langs": "^2.0.0",
     "linkify-it": "3.0.3",