You can do this only by creating your own map style, for example using snazzy maps.
Example of style:

[
    {
        "featureType": "poi",
        "elementType": "labels.icon",
        "stylers": [
            {
                "visibility": "off"
            }
        ]
    }
]

A step-by-step instruction on how to use snazzymaps in the documentation (section Styled Google Maps).