Clean up ESLint configuration

package-lock.json

@@ -152,8 +152,6 @@
         "@types/papaparse": "5.5.2",
         "@types/passport-google-oauth20": "2.0.17",
         "@types/passport-openidconnect": "0.1.3",
-        "@typescript-eslint/eslint-plugin": "8.67.0",
-        "@typescript-eslint/parser": "8.67.0",
         "eslint": "9.35.0",
         "eslint-config-prettier": "10.1.8",
         "eslint-plugin-import": "2.32.0",