Remove cart coupon

{
    "status": 200,
    "success": true,
    "data": {
        "id": "abc123def456",
        "store_id": "411465608",
        "count": 2,
        "checkout_url": "https://example.salla.sa/checkout/abc123def456",
        "currency": {
            "label": "ر.س",
            "code": "SAR"
        },
        "scope": {
            "id": "9881",
            "type": "branch"
        },
        "amounts": {
            "sub_total": {
                "title": "Subtotal",
                "amount": {
                    "value": 300,
                    "currency": "SAR"
                }
            },
            "coupon": {
                "title": "Coupon",
                "amount": {
                    "value": 30,
                    "currency": "SAR"
                }
            },
            "offers": {
                "title": "Offers",
                "amount": {
                    "value": 20,
                    "currency": "SAR"
                }
            },
            "tax": {
                "title": "Tax (15%)",
                "amount": {
                    "value": 37.5,
                    "currency": "SAR"
                }
            },
            "total": {
                "title": "Total",
                "amount": {
                    "value": 287.5,
                    "currency": "SAR"
                }
            }
        },
        "shipping": {
            "required": true
        },
        "coupon": null,
        "features": {
            "coupon": true,
            "gift": true,
            "loyalty": false,
            "guest_checkout": true
        },
        "discounts": {
            "coupon": {
                "id": 4521,
                "title": "Coupon",
                "amount": {
                    "value": 30,
                    "currency": "SAR"
                }
            },
            "offers": [
                {
                    "id": 8812,
                    "type": "fixed_amount",
                    "title": "Summer sale",
                    "amount": {
                        "value": 20,
                        "currency": "SAR"
                    }
                }
            ]
        },
        "settings": {
            "gift": {
                "text": "Happy birthday!",
                "type": "free"
            }
        }
    }
}