Update set-up-searches.md (#4680)

No longer support real-time alerts for scheduled searches. Likely need to update other areas of the docs as well.

Author: wjakelee

docs/alerts/webhook-connections/servicenow/set-up-searches.md

@@ -23,7 +23,6 @@ Before you can set up searches for ServiceNow, you'll need to configure a [Servi
 1. Choose an option from the **Run Frequency** menu:
 
    * **Never.** Choose this option to temporarily **turn off a scheduled search**.
-   * **Real Time.** Enterprise and paid trial customers can use this option to set up [Real Time Alerts](../../../alerts/scheduled-searches/create-real-time-alert.md).
    * **Every 15 Minutes.** The search will run for the first time when you save the schedule, and then every 15 minutes after that.
    * **Hourly.** The search will run for the first time at the top of the next hour after you save the schedule, and then every hour after that. * **Every 2, 4, 6, 8, or 12 Hours.** The search will run for the first time at the top of the hour you choose.
    * **Daily.** Choose the time you'd like to run the search every day. A Daily search will cover exactly 24 hours of activity. You can change the schedule whenever you'd like.