A measure that would ban circumcision in San Francisco will likely be kept off the November ballot thanks to a ruling by Superior Court Judge Loretta M. Giorgi. In a tentative ruling, which will likely be finalized Thursday, Giorgi agreed with the Jewish Community Relations Council and Muslim religious groups who had filed suit claiming the initiative violated a state law that bars local governments from regulating health care professionals. “The evidence presented is overwhelmingly persuasive that circumcision is a widely practiced medical procedure,” Giorgi wrote. “Because the proposed ballot initiative attempts to regulate a medical procedure, the proposed ordinance is expressly preempted.”