[Feature][UI Next] Delete build:dev in package.json. (#8600)

dolphinscheduler-ui-next/package.json

@@ -3,7 +3,6 @@
   "version": "0.0.0",
   "scripts": {
     "dev": "vite",
-    "build:dev": "vue-tsc --noEmit && vite build --mode development",
     "build:prod": "vue-tsc --noEmit && vite build --mode production",
     "preview": "vite preview",
     "lint": "eslint src --fix --ext .ts,.tsx,.vue",