By Paresh Dave and Diane Bartz SAN FRANCISCO (Reuters) -California filed a lawsuit against Amazon.com on Wednesday, alleging that the company violated antitrust law by blocking price competition and pushing up prices for consumers. California Attorney General Rob Bonta said Amazon’s rules bar merchants from selling products at lower prices on their own websites or at the stores of Amazon’s rivals. “Through its actions, the everything store has effectively set a price floor, costing Californians more for pretty much everything,” Bonta said. The lawsuit was filed in San Francisco Superior Court….