DDF-530: Update the Admin UI to not embed its own authentication filter

The Admin UI now uses delegating security filter to dynamically add security.
Remove unnecessary comment(s)

The ui/pom.xml had comments that referred to no longer existing lines of code.
Merge pull request #5 from michael1nguyen/master

DDF-530: Update the Admin UI to not embed its own authentication filter
Reviewed by: @mrmateo