Killer Mike won’t be charged following his arrest at the Grammy Awards in February. The 49-year-old rap star was led away in handcuffs after winning three gongs at the pre-telecast prizegiving in Los Angeles and though he was booked on a misdemeanour charge in relation to an altercation inside the Crypto.com Arena venue, things won’t be taken any further. Prosecutors in the Los Angeles City Attorney’s Office told TMZ they won’t be filing charges against Mike, though they could reopen the case if he doesn’t stay out of trouble for the next year. The outlet reported the ‘Big Beast’ hitmaker had …