chore: use licia isDarkMode

src/DevTools/DevTools.js

@@ -12,7 +12,7 @@ import {
   isNum,
   $,
   throttle,
-  MediaQuery
+  isDarkMode
 } from '../lib/util'
 import evalCss from '../lib/evalCss'
 
@@ -266,8 +266,3 @@ export default class DevTools extends Emitter {
     }
   }
 }
-
-function isDarkMode() {
-  const m = new MediaQuery('(prefers-color-scheme: dark)')
-  return m.isMatch()
-}