Removed useless title on ID checkboxes

http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=31217

![tooltips](https://f.cloud.github.com/assets/744259/692716/fef8c2f6-dc42-11e2-9899-db3efb38288e.png)

### Testing Instructions
Check all the grid views (list views, like the Article Manager, Module Manager, etc) to see if the title on the ID checkboxes are gone. You can see the old titles when hovering over the checkbox.