Mr Yusuph Olaniyonu, Special Adviser to the President of the Senate on Media and Publicity, disclosed this in a statement in Abuja on Monday.
Olaniyonu said the discontinuation of the case followed the intervention of the National Judicial Council (NJC) on the matter. The case was slated for hearing at the apex court on Tuesday.
The decision, according to him, affirms the confidence of the Senate in the ability of the NJC to successfully and creditably resolve the matter.
Onnoghen was suspended by President Muhammadu Buhari on January 25 on the order of the Code of Conduct Tribunal (CCT) where the CJN is facing trial for alleged false asset declaration.
Buhari immediately swore in Justice Tanko Muhammed, the most senior justice of the Supreme Court, as acting CJN.
The president’s action sparked criticisms from some Nigerians, including the President of the Senate, Bukola Saraki, who dismissed the suspension as unconstitutional.
Four days later, Saraki said the Senate had filed a case at the apex court to challenge the president’s action, a move disowned by the APC caucus.
Rising from an emergency meeting on the matter on Tuesday, the NJC gave Onnoghen and Muhammad seven working days to respond to petitions written against them.