You are going to have to figure out which library is the right one for your board, and get rid of the others.
IIRC (and to be fair, I may not), WiFi, like Wire and SPI, is one of the libraries that's specific to a particular core, and so is included with the core when it's installed. So theoretically, there shouldn't be any WiFi libraries in your user library subdirectory; the "right" one is the one in the core directory tree. But as I've never actually run into your particular situation myself, I could quite well be wrong is both my diagnosis and solution.