Cleanup useless things

Author: Martin Journois

folium/folium.py

@@ -9,6 +9,4 @@
 from .scroll_zoom_toggler import ScrollZoomToggler
 from .terminator import Terminator
 from .boat_marker import BoatMarker
-from .layer import Layer, LayerControl
-from .geo_json import GeoJson
 from .timestamped_geo_json import TimestampedGeoJson