refactor: remove old maintenance settings

web/src/lib/components/admin-settings/MaintenanceSettings.svelte

@@ -1,35 +0,0 @@
-<script lang="ts">
-  import { handleError } from '$lib/utils/handle-error';
-  import { MaintenanceAction, setMaintenanceMode } from '@immich/sdk';
-  import { Button } from '@immich/ui';
-  import { t } from 'svelte-i18n';
-  import { fade } from 'svelte/transition';
-
-  interface Props {
-    disabled?: boolean;
-  }
-
-  let { disabled = false }: Props = $props();
-
-  async function start() {
-    try {
-      await setMaintenanceMode({
-        setMaintenanceModeDto: {
-          action: MaintenanceAction.Start,
-        },
-      });
-    } catch (error) {
-      handleError(error, $t('admin.maintenance_start_error'));
-    }
-  }
-</script>
-
-<div>
-  <div in:fade={{ duration: 500 }}>
-    <div class="ms-4 mt-4 flex items-end gap-4">
-      <Button shape="round" type="submit" {disabled} size="small" onclick={start}
-        >{$t('admin.maintenance_start')}</Button
-      >
-    </div>
-  </div>
-</div>

web/src/routes/admin/system-settings/+page.svelte

@@ -7,7 +7,6 @@
   import LibrarySettings from '$lib/components/admin-settings/LibrarySettings.svelte';
   import LoggingSettings from '$lib/components/admin-settings/LoggingSettings.svelte';
   import MachineLearningSettings from '$lib/components/admin-settings/MachineLearningSettings.svelte';
-  import MaintenanceSettings from '$lib/components/admin-settings/MaintenanceSettings.svelte';
   import MapSettings from '$lib/components/admin-settings/MapSettings.svelte';
   import MetadataSettings from '$lib/components/admin-settings/MetadataSettings.svelte';
   import NewVersionCheckSettings from '$lib/components/admin-settings/NewVersionCheckSettings.svelte';
@@ -41,7 +40,6 @@
     mdiLockOutline,
     mdiMapMarkerOutline,
     mdiPaletteOutline,
-    mdiRestore,
     mdiRobotOutline,
     mdiServerOutline,
     mdiSync,
@@ -115,13 +113,6 @@
       key: 'machine-learning',
       icon: mdiRobotOutline,
     },
-    {
-      component: MaintenanceSettings,
-      title: $t('admin.maintenance_settings'),
-      subtitle: $t('admin.maintenance_settings_description'),
-      key: 'maintenance',
-      icon: mdiRestore,
-    },
     {
       component: MapSettings,
       title: $t('admin.map_gps_settings'),