Remove babel backend dep

backend/package.json

@@ -39,7 +39,6 @@
     "prettier": "./node_modules/.bin/prettier --write \"src/**/*.{js,ts}\""
   },
   "dependencies": {
-    "@babel/core": "^7.25.2",
     "@mempool/electrum-client": "1.1.9",
     "@types/node": "^18.15.3",
     "axios": "1.7.2",
@@ -55,8 +54,6 @@
     "ws": "~8.18.0"
   },
   "devDependencies": {
-    "@babel/code-frame": "^7.18.6",
-    "@babel/core": "^7.25.2",
     "@types/compression": "^1.7.2",
     "@types/crypto-js": "^4.1.1",
     "@types/express": "^4.17.17",