code: function(x, y, filter){
              var arr = this.get(x, y, filter);
              for(var i = arr.length - 1; i >= 0; i--){
                  this.remove(arr[i]);
              }
          }
docs: Remove all objects from given location.
  @method removeAt
  @param {Number} x - Tile map x coord.
  @param {Number} y - Tile map y coord.
  @param {Function} [filter] - A function to filter the objects removed `function(object){  return true }`.