Bing : fix 'z' is defined but never used in getTileUrl()
Bing : fix 'z' is defined but never used in getTileUrl()

falcacibar/leaflet-plugins,jblarsen/leaflet-plugins,shramov/leaflet-plugins,falcacibar/leaflet-plugins,falcacibar/leaflet-plugins,realtymaps/leaflet-plugins,jblarsen/leaflet-plugins,realtymaps/leaflet-plugins,shramov/leaflet-plugins