Remove unused dependencies

Keeping the amount of dependencies small speeds up installations.
It also helps to reduce the clutter and to get a better overview of the
application.

app/package.json

@@ -2,7 +2,6 @@
   "name": "chat-with-gpt",
   "version": "0.2.3",
   "dependencies": {
-    "@auth0/auth0-spa-js": "^2.0.4",
     "@chengsokdara/use-whisper": "^0.2.0",
     "@emotion/css": "^11.10.6",
     "@emotion/react": "^11.10.6",
@@ -17,17 +16,12 @@
     "@svgr/webpack": "^6.5.1",
     "broadcast-channel": "^4.20.2",
     "buffer": "^6.0.3",
-    "csv": "^6.2.8",
-    "expiry-set": "^1.0.0",
+    "events": "^3.3.0",
     "idb-keyval": "^6.2.0",
     "jshashes": "^1.0.8",
     "lib0": "^0.2.73",
-    "localforage": "^1.10.0",
-    "match-sorter": "^6.3.1",
     "minisearch": "^6.0.1",
-    "natural": "^6.2.0",
     "openai": "^3.2.1",
-    "papaparse": "^5.4.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-helmet": "^6.1.0",
@@ -42,10 +36,7 @@
     "remark-math": "^5.1.1",
     "sentence-splitter": "^4.2.0",
     "slugify": "^1.6.5",
-    "sort-by": "^0.0.2",
-    "url": "^0.11.0",
     "uuid": "^9.0.0",
-    "web-vitals": "^2.1.4",
     "workerize-loader": "^2.0.2",
     "y-indexeddb": "^9.0.9",
     "y-protocols": "^1.0.5",
@@ -82,17 +73,11 @@
   "devDependencies": {
     "@craco/craco": "^7.1.0",
     "@formatjs/cli": "^6.0.4",
-    "@testing-library/jest-dom": "^5.16.5",
-    "@testing-library/react": "^13.4.0",
-    "@testing-library/user-event": "^13.5.0",
     "@types/jest": "^27.5.2",
-    "@types/natural": "^5.1.2",
     "@types/node": "^16.18.13",
-    "@types/papaparse": "^5.3.7",
     "@types/react": "^18.0.28",
     "@types/react-dom": "^18.0.11",
     "@types/react-helmet": "^6.1.6",
-    "@types/react-intl": "^3.0.0",
     "@types/react-syntax-highlighter": "^15.5.6",
     "@types/uuid": "^9.0.1",
     "babel-plugin-formatjs": "^10.4.0",