The fire station used at New Hampshire’s Hampton Beach for 90 years has been demolished after the department moved into its new home two weeks ago. The old station had asbestos, a leaky roof, and small garage door openings. Voters approved a replacement in 2012. The new station was built behind the old one. WMUR-TV reported that the station demolished Monday was built in 1923 to replace the original one after it burned to the ground. ‘‘Buildings take a lot of maintenance, and this took more than most,’’ said Deputy Chief Jamie Ayotte.