Removing an Action 
You can replace the existing actions in a decision table with alternative actions.
Locate the ruleset, expand the ruleset node, the Decision Tables folder and choose a Decision Table node .
For more information, see Locating the Ruleset
or
Locate the flow ruleset , expand the flow ruleset node, the Decision Tables folder and choose a decision table node.
For more information, see Locating the Flow Ruleset
In the decision table editor, choose the Action button.
In the menu that appears, choose Remove Actions.
In the dialog box that appears, select the actions that you want to remove and choose OK.
Save the changes.