If it is because of lack of circulation and number of buyers declining every month, then its understandable... Maybe people simply are not buying the magazines anymore, since they can find all that and more for free on the internet. It could also be that the magazine has simply declined in quality and is not worth spending money on (or investing on it) anymore.
But if it has been discontinued as a potential means to save expenditure, thanks to the WWE Network not nearly being as big a hit as they expected, then I think it was a wrong move. WWE has been more interesting in 2014 than it has been in the last 8-9 years at least. There are many interesting superstars like Bryan, Wyatt and his family, the former Shield members, Cesaro, Paige and Emma etc, plus new signings like KENTA, Steen and Sting- so many stories and background history about these guys that could be published, that the fans would be interested in knowing about... especially if compared to the boring Cena, Kofi, Dolph, Kelly Kelly, Miz etc. of the yesteryears.