How to remove keys for list of objects in javascript

Question

I have list of objects created like this:

for(var i = 0; i < retrievedContactsArr.length; i++){
    for(var k = 0; k < result.length; k++){
        if(retrievedContactsArr[i].contact.phone.cell && retrievedContactsArr[i].contact.phone.cell === result[k].contact.phone.cell){
            retrievedContactsArr.splice(i, 1);
        }
    }
    retrievedContactsObj[i] = retrievedContactsArr[i];
}

But they are created with keys "0", "1" like this:

{
    "0": {
        "contact": {
            "address": {
                "home": "",
                "office": ""
            },
        },
        "name": "Test3"
    },
    "1": {
        "contact": {
            "address": {
                "home": "",
                "office": ""
            },
        },
        "name": "Test2"
    }
}

How do I remove the keys for the above object ?