WASHINGTON — Retired Marine Gen. John F. Kelly was relieved to relieve White House Chief of Staff John Kelly of duty, sources confirmed today.

Kelly will depart by the end of the year.

Kelly, who in the past honorably served as a Marine and was also the Department of Homeland Security Secretary for a couple of weeks or whatever before moving to the White House, informed the chief of his relief to the relief of the chief, while standing in front of a mirror in the West Wing.

Trump chose some guy named Mick Mulvaney, who is the head of the Office of Budget and Management, to replace Kelly. Mulvaney is reportedly a pay-to-play Republican — a much better fit for Trump than the somewhat morally-upstanding Kelly — who once said, “If you are a lobbyist who never gave us money, I did not talk to you. If you are a lobbyist who gave us money, I might talk to you.”

Reports of Kelly being forced to leave his suit jacket behind — as happened to previous Trump aide John McEntee — were dismissed.

“He dro…