Remove unused dependencies.

Author: RubenVerborgh

package-lock.json

@@ -53,20 +53,16 @@
     "inquirer": "^1.0.2",
     "ip-range-check": "0.0.2",
     "is-ip": "^2.0.0",
-    "jsonld": "^0.4.5",
     "li": "^1.0.1",
     "mime-types": "^2.1.11",
     "negotiator": "^0.6.0",
-    "node-fetch": "^1.7.1",
     "node-forge": "^0.6.38",
     "nodemailer": "^3.1.4",
-    "nomnom": "^1.8.1",
     "oidc-auth-manager": "^0.15.0",
     "oidc-op-express": "^0.0.3",
     "rdflib": "^0.16.2",
     "recursive-readdir": "^2.1.0",
     "rimraf": "^2.5.0",
-    "run-waterfall": "^1.1.3",
     "solid-namespace": "^0.1.0",
     "solid-permissions": "^0.5.2",
     "solid-ws": "^0.2.3",
@@ -87,6 +83,7 @@
     "localstorage-memory": "^1.0.2",
     "mocha": "^5.1.1",
     "nock": "^9.0.14",
+    "node-fetch": "^1.7.1",
     "node-mocks-http": "^1.7.0",
     "nyc": "^10.1.2",
     "sinon": "^2.1.0",