Bad news for some Lovatics ... Demi Lovato just pulled the plug on a whopping five dates from her "It’s Not That Deep" tour. In a lengthy IG Stories post Tuesday, Demi revealed she’s also pushing back the tour kickoff -- moving it from April 8 in Charlotte, NC to April 13 in Orlando, FL -- saying the call is all about protecting her health. Demi explained once rehearsals got underway, it became clear she’d overextended herself. Bottom line: she needs more time to "rest and rehearse" so she can