UP-3950 : Remove portlet bugfix 

In JIRA: [UP-3950](https://issues.jasig.org/browse/UP-3950).

Remove happens via an ajax call on the onclick event in the layout preferences JS file.  However, we still have the anchor tag that never gets called, unless there is a JS error on the page preventing the handler from being created.

This removes that unneeded anchor tag.

This also fixes a permission issue to check whether the Remove option should be visible.