chore: remove imported unused type

Mini-ghost · Mini-ghost · commit 418d7c25d969 · 2021-02-04T14:16:39.000+08:00
diff --git a/types/index.d.ts b/types/index.d.ts
@@ -4,7 +4,6 @@ import {
   SetupContext,
   EmitsOptions,
   ComponentPublicInstance,
-  DefineComponent,
   Component
 } from 'vue'
 
