Remove unused mocha (#1013)

I don't see mocha used anywhere

## Launch Checklist

<!-- Thanks for the PR! Feel free to add or remove items from the
checklist. -->


 - [ ] Briefly describe the changes in this PR.
 - [ ] Link to related issues.
- [ ] Include before/after visuals or gifs if this PR includes visual
changes.
 - [ ] Write tests for all new functionality.
 - [ ] Add an entry to `CHANGELOG.md` under the `## main` section.

package.json

@@ -108,7 +108,6 @@
     "@types/lodash.get": "^4.4.9",
     "@types/lodash.isequal": "^4.5.8",
     "@types/lodash.throttle": "^4.1.9",
-    "@types/mocha": "^10.0.10",
     "@types/randomcolor": "^0.5.9",
     "@types/react": "^18.2.67",
     "@types/react-aria-menubutton": "^6.2.14",
@@ -135,7 +134,6 @@
     "i18next-parser": "^9.1.0",
     "istanbul": "^0.4.5",
     "istanbul-lib-coverage": "^3.2.2",
-    "mocha": "^11.0.1",
     "postcss": "^8.4.38",
     "react-hot-loader": "^4.13.1",
     "sass": "^1.83.4",