Update SUMMARY.md

Author: svenvg93

SUMMARY.md

@@ -32,7 +32,6 @@
 * [Data Integrations](settings/data-platforms/README.md)
   * [InfluxDB v2](settings/data-platforms/influxdb2.md)
 * [Notifications](settings/notifications/README.md)
-  * [Apprise](settings/notifications/apprise.md)
   * [Database](settings/notifications/database.md)
   * [Mail](settings/notifications/mail.md)
   * [Webhook](settings/notifications/webhook.md)