Say what you will about Nicolas Roeg’s 1990 adaptation of Roald Dahl’s The Witches; it knows how to be nightmare fuel. For all the faults in the original source material, Roeg’s version is bold enough to really scare children out of their wits, which isn’t a bad goal for a PG-horror story. Unfortunately, kids will likely find themselves bored and listless with Robert Zemeckis’ new adaptation of The Witches. While it still follows the same basic plot beats, Zemeckis misses every opportunity to be interesting with his story, instead opting for the adventures of CGI …