Remove setStyle within init which did not allow our own setStyle

[themogwi]

This change looks to have no negative effects and allows for the use of setStyle to customize marker icons for instance.

Without the change doing something like the following would have no effect and the default pin icon would be used.

dataLayer = new DataLayerClusterer({
    "map": map,
    "maxZoom": 15
});

dataLayer.addGeoJson(data);

dataLayer.setStyle(function(feature) {
    var militaryFriendly = feature.getProperty('military_friendly');
    return {
        icon: militaryFriendly === true ? baseURL + 'img/map/university-green.png' : baseURL + 'img/map/university-red.png'
    };
});

[Connum]

It does indeed not seem to have any impact. I feared that it could make markers that are loaded from the start pop up shortly before being clustered, but I could not see it happening in my tests.

Thanks again for contributing!