small fix in deletion of contentitemsheet
small fix in deletion of contentitemsheet

nemomobile-graveyard/meegotouch-controlpanelapplets,deztructor/meegotouch-controlpanelapplets,deztructor/meegotouch-controlpanelapplets,nemomobile-graveyard/meegotouch-controlpanelapplets,nemomobile-graveyard/meegotouch-controlpanelapplets,deztructor/meegotouch-controlpanelapplets