It’s time to break up with “The Bachelor” franchise. Or at least it’s time to start seeing other shows. This week’s finale of “The Bachelorettes” — the 19th spinoff season of “The Bachelor,” which itself is coming up on its 27th season — was a low, even for a show that is always overpromising and underdelivering on canned drama. “The Bachelorettes” finale wasn’t “the most dramatic” or “the most shocking” in series history. But it may have been the least satisfying, which made it a fitting close for a show that is in dire need of a makeover. Let’s back up to the beginning. “The Bachelor” launch…