Remove unused marked package. (#122)

Author: jdillick

package-lock.json

@@ -76,7 +76,6 @@
     "http-proxy-middleware": "^0.20.0",
     "jed": "^1.1.1",
     "jsdom": "^16.5.2",
-    "marked": "^0.8.2",
     "memory-cache": "^0.2.0",
     "moment": "^2.29.1",
     "morgan": "^1.10.0",