It’s a legal score for MSG. Former New York Knicks star Charles Oakley must pay more than $642,000 in lawyer fees to Madison Square Garden for deleting text messages during a court battle over his ejection from a game eight years ago, according to court documents. The 61-year-old former power forward — who filed a defamation lawsuit against the arena firm and its CEO James Dolan in September 2017 — is accused of sending the company’s high-priced attorneys on a wallet-busting wild goose chase. “