bug fix

packages/ui-default/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.16.3",
+  "version": "4.16.4",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",
@@ -42,7 +42,6 @@
     "clipboard": "^2.0.8",
     "copy-webpack-plugin": "^6.4.1",
     "css-loader": "^4.3.0",
-    "dayjs": "^1.10.6",
     "diff-dom": "^4.2.2",
     "echarts": "^5.1.2",
     "emojify.js": "^1.1.0",