[{name:"duplicate",value:true,id:2910921},{name:"duplicate",value:true,id:32838293},{name:"duplicate",value:false,id:3283232},{name:"notDuplicate",value:true,id:382932},{name:"duplicate",value:true,id:123},{name:"duplicate",value:true,id:456},{name:"duplicate-yes",value:true,id:456},{name:"duplicate-yes",value:true,id:9909}]

db.collection.aggregate([{$group:{_id:{name:"$name",value:"$value"},_idsNeedsToBeDeleted:{$push:"$$ROOT._id"}}},{$project:{_id:0,_idsNeedsToBeDeleted:{$slice:["$_idsNeedsToBeDeleted",1,{$size:"$_idsNeedsToBeDeleted"}]}}},{$unwind:"$_idsNeedsToBeDeleted"},{$group:{_id:"",_idsNeedsToBeDeleted:{$push:"$_idsNeedsToBeDeleted"}}}])