"We both decided to give up his defence," lawyer Frank Berton said in a joint interview with France's BFM TV with fellow lawyer Sven Mary.
"We don't think that he will speak, and he will use the right to remain silent," said Berton.
Paris attacks Pakistani, Algerian charged in France
"Given our position, what are we supposed to do? We said from the beginning... that if our client remained silent we would quit his defence," he added.
Abdeslam is the sole surviving member of the group behind the November 13 carnage at a Paris concert hall, bars and the national stadium that left 130 people dead and scores injured.
The Islamic State group claimed responsibility for the atrocity, one of a string of attacks claimed by the jihadists that have put Europe on edge.
Abdeslam has refused to answer questions since being transferred to France from Belgium in April.
Berton said he had seen his client around 10 times and had regularly spoken to him on the phone.
He said the 27-year-old Belgian-born French national had written to the authorities to tell them he no longer wanted representation.
Mary, his Belgian counsel, said he had felt as if his role was just to "pay social visits to the prison".
Abdeslam has protested at the round-the-clock CCTV surveillance of his jail cell in Fleury-Merogis prison south of Paris, where he is being held in solitary confinement. The CCTV surveillance was the "clear" reason why he was tightlipped, said Berton.
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"Authorisation for the surveillance is valid for three months and the minister of justice is going to decide shortly on whether to renew it," Berton said. "I sense that he (Abdeslam) will contest this as well."
After four months on the run, he was arrested on March 18 in Molenbeek, a Brussels neighbourhood notorious for being a hotbed of Islamic extremism, where he grew up.
He was transferred to France to face terror charges on April 27.
Investigators have yet to pin down his exact role in the worst terror attack in French history.
Abdeslam drove the three suicide bombers who blew themselves up outside the Stade de France to the stadium and then roamed the city before fleeing to Belgium the next day.
He told investigators there he had also wanted to blow himself up at the Stade de France but had changed his mind.
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