The $500 million SoCal warehouse intentionally burned by a smirking arsonist is set to be demolished, city officials say. It took 175 firefighters to extinguish Ontario’s 1.2-million-square-foot Kimberly-Clark paper goods warehouse allegedly set alight by a disgruntled employee who wanted higher pay on April 7.   A month later, city officials said the hulking ruin is set to be demolished, even as the charred site of the six-alarm fire near South Hellman Avenue and Merrill Avenue in San Bernadino County still smolders and threatens to ignite again. The cost of the massive blaze as pegged at $500 million. Fox11 Chamel Abdulkarim faces life in prison. Ontario Police Department “We have received calls regarding smoldering and potential fire activity at the Kimberly-Clark warehouse,” the City of Ontario posted in an online community update issued last week. “Demolition by the responsible party is currently pending,” the message continued.…