SAN DIEGO — Advocacy groups are asking the state of California to take away a psychologist’s license to practice after a dozen people held in immigration custody at Otay Mesa Detention Center complained that she mistreated them in ways that led to the deterioration of their mental health. In a copy of a complaint obtained by the San Diego Union-Tribune, filed with the California Board of Psychology on Tuesday, 12 men said that Dr. Hyrsso Fernbach spoke to them in a hateful and mocking way, dismissed their concerns and accused them of making up symptoms. Several people named in the complaint co…