After a brief stint in the national spotlight, the Granite State returned to its usual state of obscurity Tuesday following the conclusion of the New Hampshire presidential primaries. 'Thank you for being here to document our quadrennial week of national prominence and attention,' New Hampshire Gov. Jeanne Shaheen shouted to departing TV and newspaper reporters. 'We look forward to your return in January 2004.' Shaheen then returned to the governor's mansion to begin work on her keynote address for the Merrimack Maple Festival, scheduled for Nov. 11-14. 