Delete markdown-include package

package.json

@@ -85,7 +85,6 @@
     "libxml2-wasm": "^0.5.0",
     "lodash": "^4.17.21",
     "luxon": "^3.3.0",
-    "markdown-include": "^0.4.3",
     "mockdate": "^3.0.5",
     "nedb-promises": "^6.0.3",
     "node-cleanup": "^2.1.2",