remove unnecessary packages from app

packages/app/package.json

@@ -74,14 +74,12 @@
     "@growi/slack": "^6.0.0-RC.9",
     "@promster/express": "^7.0.2",
     "@promster/server": "^7.0.4",
-    "@slack/events-api": "^3.0.0",
     "@slack/web-api": "^6.2.4",
     "@slack/webhook": "^6.0.0",
     "JSONStream": "^1.3.5",
     "archiver": "^5.3.0",
     "array.prototype.flatmap": "^1.2.2",
     "async-canvas-to-blob": "^1.0.3",
-    "aws-sdk": "^2.1044.0",
     "axios": "^0.24.0",
     "axios-retry": "^3.2.4",
     "body-parser": "^1.18.2",
@@ -150,8 +148,6 @@
     "passport-local": "^1.0.0",
     "passport-saml": "^3.2.0",
     "passport-twitter": "^1.0.4",
-    "prism-themes": "^1.9.0",
-    "prom-client": "^13.0.0",
     "rate-limiter-flexible": "^2.3.7",
     "react": "^18.2.0",
     "react-bootstrap-typeahead": "^5.2.2",
@@ -180,8 +176,6 @@
     "remark-emoji": "^3.0.2",
     "remark-gfm": "^3.0.1",
     "remark-math": "^5.1.1",
-    "remark-wiki-link": "^1.0.4",
-    "rimraf": "^3.0.0",
     "simplebar-react": "^2.3.6",
     "socket.io": "^4.2.0",
     "sticky-events": "^3.4.11",