CHENNAI, March 21 -- The Madras High Court on Wednesday dismissed a petition filed by former Union minister Dayanidhi Maran and five others seeking that charges framed against them in an illegal telephone exchange case be quashed. Maran has been fielded by the Dravida Munnetra Kazhagam (DMK) from the Central Chennai seat for the upcoming Lok Sabha elections. Justice N Anand Venkatesh dismissed the petition and directed the Central Bureau of Investigation (CBI) special court to complete the trial....