Android Google Maps v2 remove default markers

You can do it simply by modification of the map style: Adding a Styled Map

1. Create JSON file src\main\res\raw\map_style.json like this:

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

2. Add map style to your GoogleMap

googleMap.setMapStyle(MapStyleOptions.loadRawResourceStyle(getContext(), R.raw.map_style));