Enable or disable users to delete a portlet.
The delete option is the check box located in the top right
corner of the container. When the delete box is unchecked for a portlet,
the delete icon for the portlet is unavailable for users who are modifying
the page in Edit Layout and Content. When this box is checked for
a portlet, the delete icon for the portlet is available for users
who are modifying the page in Edit Layout and Content. When a portlet
is added to a page, the default setting is a checked box for the portlet.