refactor: remove all unused imports (#9951)

Co-authored-by: tamaina <tamaina@hotmail.co.jp>

packages/frontend/src/components/global/MkA.vue

@@ -5,7 +5,6 @@
 </template>
 
 <script lang="ts" setup>
-import { inject } from 'vue';
 import * as os from '@/os';
 import copyToClipboard from '@/scripts/copy-to-clipboard';
 import { url } from '@/config';

packages/frontend/src/components/global/MkAvatar.vue

@@ -18,7 +18,7 @@
 </template>
 
 <script lang="ts" setup>
-import { onMounted, watch } from 'vue';
+import { watch } from 'vue';
 import * as misskey from 'misskey-js';
 import { getStaticImageUrl } from '@/scripts/media-proxy';
 import { extractAvgColorFromBlurhash } from '@/scripts/extract-avg-color-from-blurhash';

packages/frontend/src/components/global/MkPageHeader.tabs.vue

@@ -34,7 +34,7 @@ export type Tab = {
 </script>
 
 <script lang="ts" setup>
-import { onMounted, onUnmounted, watch, nextTick, Transition, shallowRef } from 'vue';
+import { onMounted, onUnmounted, watch, nextTick, shallowRef } from 'vue';
 import { defaultStore } from '@/store';
 
 const props = withDefaults(defineProps<{

packages/frontend/src/components/global/MkSpacer.vue

@@ -7,7 +7,7 @@
 </template>
 
 <script lang="ts" setup>
-import { inject, onMounted, onUnmounted, ref } from 'vue';
+import { inject } from 'vue';
 import { deviceKind } from '@/scripts/device-kind';
 
 const props = withDefaults(defineProps<{

packages/frontend/src/components/global/RouterView.vue

@@ -11,7 +11,7 @@
 </template>
 
 <script lang="ts" setup>
-import { inject, nextTick, onBeforeUnmount, onMounted, onUnmounted, provide, watch } from 'vue';
+import { inject, onBeforeUnmount, provide } from 'vue';
 import { Resolved, Router } from '@/nirax';
 import { defaultStore } from '@/store';