Fix tests

Author: themiurgo

folium/features.py

@@ -13,7 +13,7 @@
 from .six import text_type, binary_type
 
 from .element import Element, Figure, JavascriptLink, CssLink, Div, MacroElement
-from .map import Map, TileLayer, Icon, Marker, Popup
+from .map import TileLayer, Icon, Marker, Popup
 
 class WmsTileLayer(TileLayer):
     def __init__(self, url, name=None,