You need to pass gestureHandling: 'greedy' to your map options.

Documentation: https://developers.google.com/maps/documentation/javascript/interaction#gestureHandling

For example:

const map = new google.maps.Map(mapElement, {
  center: { 0, 0 },
  zoom: 4,
  gestureHandling: 'greedy'
});

Update! Since Google Maps 3.35.6 you need to encase the property into an options wrapper:

const map = new google.maps.Map(mapElement, {
  center: { 0, 0 },
  zoom: 4,
  options: {
    gestureHandling: 'greedy'
  }
});

Thank you ealfonso for the new info

If you're OK with disabling scroll-to-zoom entirely, you can use scrollwheel: false. The user will still be able to zoom the map by clicking the zoom buttons if you provide them with the zoom control (zoomControl: true).

Documentation: https://developers.google.com/maps/documentation/javascript/reference (search the page for "scrollwheel")

const map = new google.maps.Map(mapElement, {
  center: { 0, 0 },
  zoom: 4,
  scrollwheel: false,
  zoomControl: true
});

If you are looking to only hide the overlay but still disable the ability to scroll and zoom (like before), you could use CSS to hide the overlay:

.gm-style-pbc {
opacity: 0 !important;
}

Note this will hide it for mobile as well so you could use something like this to ensure it shows "use two fingers to move the map":

@media only screen and ( min-width: 980px ) {
.gm-style-pbc {
opacity: 0 !important;
}
}