chore(client): remove useless global definition

Author: meteorlxy

packages/client/types.d.ts

@@ -4,5 +4,4 @@ declare const __VUEPRESS_BASE__: string
 declare const __VUEPRESS_DEV__: boolean
 declare const __VUEPRESS_SSR__: boolean
 declare const __VUE_HMR_RUNTIME__: Record<string, unknown>
-declare const __VUE_OPTIONS_API__: boolean
 declare const __VUE_PROD_DEVTOOLS__: boolean