Removes note

Author: nastasha-solomon

docs/detections/alert-suppression.asciidoc

@@ -23,8 +23,6 @@ Normally, when a rule meets its criteria repeatedly, it creates multiple alerts,
 
 The {security-app} displays several indicators in the Alerts table and the alert details flyout when a detection alert is created with alert suppression enabled. You can view the original events associated with suppressed alerts by investigating the alert in Timeline.
 
-NOTE: Alert suppression is not available for Elastic prebuilt rules. However, if you want to suppress alerts for a prebuilt rule, you can duplicate it, then configure alert suppression on the duplicated rule.
-
 === Configure alert suppression
 
 You can configure alert suppression when you create or edit a supported rule type. Refer to documentation for creating <<create-custom-rule,custom query>>, <<create-threshold-rule, threshold>>, <<create-eql-rule,event correlation>>, <<create-new-terms-rule,new terms>>, <<create-esql-rule,{esql}>>, or <<create-ml-rule,{ml}>> rules for detailed instructions.