Deleting Conditions and Actions 
Locate the ruleset, expand the ruleset node, the Rules folder and double-click a rule node.
For more information, see Locating the Ruleset
or
Locate the flow ruleset , expand the flow ruleset node, the Rules folder and double-click a rule node.
For more information. see Locating the Flow Ruleset
Note
You can also expand the Rules folder in the Outline view and choose a rule node.
In the rule editor that appears, under the If section, select the conditions you want to delete and press Ctrl + D.
Note
You can also choose Delete Row in the context menu of a condition.
In the dialog box that appears, select the conditions you want to remove and choose OK.
You can choose the Select All and Deselect All buttons to select or deselect all the conditions all at once.
Repeat the steps to delete actions under the Then section.