NEW DELHI: In a huge relief for Home Minister P Chidambaram, a Delhi court today dismissed a petition by Janata Party President Subramanian Swamy seeking to make him a co-accused in the 2G spectrum case.   "Your prayer to summon Chidambaram as an accused is dismissed," Special Judge O P Saini said on Swamy's petition reading out from his much-awaited judgement.   The court said it will commence the hearing on the complaint filed by Swamy in which he had made further allegations against former Telecom Minister A Raja without making Chidambaram an accused from March 17.   Swamy, in his petition, had sou...