readme更新，删除无用文件

src/hooks/setting/useDesignSetting.ts

@@ -1,4 +1,4 @@
-import { computed, unref, ref } from 'vue';
+import { computed } from 'vue';
 import { useDesignSettingStore } from '@/store/modules/designSetting';
 
 export function useDesignSetting() {

src/hooks/setting/useProjectSetting.ts

@@ -1,4 +1,4 @@
-import { computed, unref, ref } from 'vue';
+import { computed } from 'vue';
 import { useProjectSettingStore } from '@/store/modules/projectSetting';
 
 export function useProjectSetting() {