Linda Cohn isn’t “going off into the sunset.” The Hall of Fame broadcaster, who has anchored more editions of “SportsCenter” on ESPN than anyone in history, announced Monday that she’s leaving the Worldwide Leader after 34 years — and she’s carrying that momentum into her next chapter. “I’m excited about what’s next, and I’m not sad about what’s ending,” Cohn said in an interview with The Post on Tuesday. “… I’m looking forward my to my next project where I could have complete freedom.” Cohn’s