A bench headed by Justice Ashok Bhushan dismissed the plea observing that she had withdrawn a similar petition in May this year.
Dubey was killed in an encounter earlier in the day, after a police vehicle carrying him from Ujjain in Madhya Pradesh to Kanpur in Uttar Pradesh met with an accident and he tried to flee.
Covid-19: SC refuses to entertain plea of TMC MP Mahua Moitra against Centre's decision on CSR funds
The top court said the petitioner being a Member of Parliament can debate it in the House whether the state should get the CSR benefit or not, as she has not challenged the law in her plea.
The government's proposal to include Mahua Moitra of the TMC and Manish Tewari of the Congress in the JPC was approved by voice vote in the lower house.
Moitra made a hard-hitting attack on the government, saying it should not go beyond tenets of democracy or arrogate any extra-constitutional authority.
Moitra said, Indian ethos is all about moderation not given to excesses and will certainly endure the present onslaught by communal forces.
Moitra's counsel mentioned the matter for urgent listing before a bench headed by Chief Justice of India S A Bobde, who asked him to approach the mentioning officer.