DEV: Remove unused legacy dependencies

package.json

@@ -6,18 +6,11 @@
   "author": "Discourse",
   "license": "GPL-2.0-only",
   "dependencies": {
-    "@discourse/itsatrap": "^2.0.10",
+    "@fortawesome/fontawesome-free": "5.15.4",
     "@discourse/moment-timezone-names-translations": "^1.0.0",
     "@fortawesome/fontawesome-free": "5.15.4",
     "@highlightjs/cdn-assets": "^10.7.0",
     "@json-editor/json-editor": "^2.6.1",
-    "@popperjs/core": "v2.10.2",
-    "@uppy/aws-s3": "^2.0.8",
-    "@uppy/aws-s3-multipart": "^2.2.1",
-    "@uppy/core": "^2.1.6",
-    "@uppy/drop-target": "^1.1.2",
-    "@uppy/utils": "^4.0.5",
-    "@uppy/xhr-upload": "^2.0.7",
     "ace-builds": "1.4.13",
     "bootbox": "3.2.0",
     "bootstrap": "v3.4.1",
@@ -26,13 +19,12 @@
     "diffhtml": "^1.0.0-beta.20",
     "eslint-config-discourse": "^2.0.0",
     "handlebars": "^4.7.7",
-    "jquery": "3.5.1",
     "magnific-popup": "1.1.0",
     "markdown-it": "13.0.1",
     "moment": "2.29.2",
     "moment-timezone": "0.5.31",
     "pikaday": "1.8.0",
-    "tippy.js": "^6.3.7",
+    "squoosh": "discourse/squoosh#dc9649d",
     "workbox-cacheable-response": "^4.3.1",
     "workbox-core": "^4.3.1",
     "workbox-expiration": "^4.3.1",
@@ -43,15 +35,9 @@
   "devDependencies": {
     "@arkweid/lefthook": "^0.7.7",
     "@mixer/parallel-prettier": "^2.0.1",
-    "browserify": "^17.0.0",
     "chrome-launcher": "^0.15.0",
     "chrome-remote-interface": "^0.31.2",
-    "pretender": "^3.4.7",
-    "puppeteer-core": "^13.7.0",
-    "qunit": "2.8.0",
-    "route-recognizer": "^0.3.3",
-    "sinon": "^13.0.1",
-    "squoosh": "discourse/squoosh#dc9649d"
+    "puppeteer-core": "^13.7.0"
   },
   "scripts": {
     "postinstall": "yarn --cwd app/assets/javascripts/discourse"