Remove deep-equal/types packages

package.json

@@ -81,7 +81,6 @@
     "@stylistic/eslint-plugin": "^4.4.1",
     "@types/chai": "^4.2.22",
     "@types/debug": "^4.1.7",
-    "@types/deep-equal": "^1.0.1",
     "@types/express": "4",
     "@types/express-ws": "^3.0.1",
     "@types/jsdom": "^27.0.0",
@@ -97,7 +96,6 @@
     "chai": "^4.3.4",
     "concurrently": "^9.1.2",
     "cross-env": "^7.0.3",
-    "deep-equal": "^2.0.5",
     "esbuild": "~0.25.2",
     "eslint": "^9.39.2",
     "eslint-plugin-jsdoc": "^50.8.0",