How to not-autopopulate content type endpoints by default?

System Information
  • Strapi Version: 3.6.5
  • Operating System: macOS Big Sur 11.1
  • Database: MongoDB Atlas / PostgreSQL
  • Node Version: v12.19.1
  • NPM Version: 6.14.8
  • Yarn Version: 1.22.10

When I get a response from content type model endpoints it’s auto-populating the first level of all relationships.
ie. when I get /cities the response is:

[
    {
        "_id": "5e4730fbeeab2cc4d9eb4fae",
        "createdAt": "2020-02-14T23:44:59.670Z",
        "updatedAt": "2020-04-09T01:56:42.116Z",
        "__v": 0,
        "state": {
            "_id": "5e4730efeeab2cc4d9eb4fad",
            "name": "Antioquia",
            "createdAt": "2020-02-14T23:44:47.199Z",
            "updatedAt": "2020-04-09T01:56:42.247Z",
            "__v": 0,
            "country": "5e47301f2743b2c3697d9609",
            "code": "antioquia",
            "id": "5e4730efeeab2cc4d9eb4fad"
        },
        "name": "Medellín",
        "code": "medellin",
        "systems": [
            {
                "cities": [
                    "5e4730fbeeab2cc4d9eb4fae",
                    "5e473138eeab2cc4d9eb4faf",
                    "5e473148eeab2cc4d9eb4fb0",
                    "5e47315ceeab2cc4d9eb4fb2",
                    "5e473169eeab2cc4d9eb4fb3",
                    "5e473179eeab2cc4d9eb4fb4",
                    "5e473190eeab2cc4d9eb4fb5",
                    "5e47319ceeab2cc4d9eb4fb6",
                    "5e4731a8eeab2cc4d9eb4fb7",
                    "5e4731b4eeab2cc4d9eb4fb8"
                ],
                "_id": "5e44b0bf136d7087f4be64f0",
                "name": "Metro de Medellín",
                "code": "co-mde-subway",
                "createdAt": "2020-02-13T02:13:19.052Z",
                "updatedAt": "2020-04-09T01:50:06.927Z",
                "__v": 0,
                "id": "5e44b0bf136d7087f4be64f0"
            },
            {
                "cities": [
                    "5e4730fbeeab2cc4d9eb4fae"
                ],
                "_id": "5f330c294aaaca0018003c89",
                "name": "EnCicla",
                "code": "co-mde-encicla",
                "createdAt": "2020-08-11T21:22:49.831Z",
                "updatedAt": "2020-08-11T21:23:00.480Z",
                "__v": 0,
                "id": "5f330c294aaaca0018003c89"
            }
        ],
        "id": "5e4730fbeeab2cc4d9eb4fae"
    },
   ...
]

how can I get the responses without auto-populating (this way):

[
    {
        "_id": "5e4730fbeeab2cc4d9eb4fae",
        "createdAt": "2020-02-14T23:44:59.670Z",
        "updatedAt": "2020-04-09T01:56:42.116Z",
        "__v": 0,
        "state": "5e4730efeeab2cc4d9eb4fad",
        "name": "Medellín",
        "code": "medellin",
        "systems": [
            "5e44b0bf136d7087f4be64f0",
            "5f330c294aaaca0018003c89"
        ],
        "id": "5e4730fbeeab2cc4d9eb4fae"
    },
    ...
]

without having to rewrite all the services

{
...
 find(params, populate) {
    return strapi.query('city').find(params, populate);
  },
...
}