The rifle-wielding gunman who took aim at former President Donald Trump reportedly called out of work Saturday — the day of the assassination attempt — and told colleagues he’d be back on the job Sunday. Thomas Crooks, the Pennsylvania man identified by authorities as the shooter who fired an AR-15 at Trump’s rally in Butler, grazing the former president’s ear and killing another man, told his boss he had “something to do” and requested off on Saturday, CNN reported, citing law enforcement officials. Crooks reportedly told coworkers he’d be back to work the following day. Want more breaking po…