You remove a custom defined template from a business rule's flow chart by right-clicking it in the flow chart, and selecting Remove. When you remove it from the flow chart, it is not deleted from the database. It exists in the database as a separate object.
To remove a template from a flow chart:
In the System View, expand the Financial Management, Planning, or Essbase application type, the application, the calculation type (for Financial Management), the plan type (for Planning), or the database (for Essbase), and Rules.
In the flow chart of the Rule Designer, right-click the template you want to remove, and select Remove.