Remove notification bell icon from homepage header

apps/jingrow/frontend/src/views/HomePage.vue

@@ -755,13 +755,8 @@ onUnmounted(() => {
               <n-button quaternary @click="handleSignup">注册</n-button>
               <n-button type="primary" @click="handleLogin" class="login-btn">登录</n-button>
             </template>
-            <!-- 已登录状态：显示通知和用户菜单 -->
+            <!-- 已登录状态：显示用户菜单 -->
             <template v-else>
-              <n-button quaternary circle>
-                <template #icon>
-                  <Icon icon="tabler:bell" />
-                </template>
-              </n-button>
               <UserMenu />
             </template>
           </n-space>