how to remove form json

i want remove stating form json how can i do it

{
"ENVELOPE": {
"line": [
{
"srno": "1",
"name": "Profit & Loss A/c",
"obcr": "0.00",
"obdr": "0",
}
]
}
}


i want like this

[
{
"srno": "1",
"name": "Profit & Loss A/c",
"obcr": "0.00",
"obdr": "0",
}
]