remove not used module

apps/app/package.json

@@ -79,7 +79,6 @@
     "@slack/web-api": "^6.2.4",
     "@slack/webhook": "^6.0.0",
     "@types/jest": "^29.5.2",
-    "@types/unist": "^3.0.0",
     "JSONStream": "^1.3.5",
     "archiver": "^5.3.0",
     "array.prototype.flatmap": "^1.2.2",
@@ -128,7 +127,6 @@
     "lucene-query-parser": "^1.2.0",
     "markdown-table": "^1.1.1",
     "md5": "^2.2.1",
-    "mdast-util-from-markdown": "^2.0.0",
     "mdast-util-frontmatter": "^2.0.0",
     "mdast-util-gfm": "^3.0.0",
     "mdast-util-to-markdown": "^2.0.0",