layer-count: fix #149 (error accessing private property)
layer-count: fix #149 (error accessing private property)

In Canvas mode there is no such property
N.B. removed code is excessive in SVG mode too (since leaflet >1)

Hubertzhang/ingress-intel-total-conversion,Hubertzhang/ingress-intel-total-conversion,McBen/ingress-intel-total-conversion,Hubertzhang/ingress-intel-total-conversion,3ch01c/ingress-intel-total-conversion,sndirsch/ingress-intel-total-conversion,3ch01c/ingress-intel-total-conversion,sndirsch/ingress-intel-total-conversion,Hubertzhang/ingress-intel-total-conversion,McBen/ingress-intel-total-conversion,sndirsch/ingress-intel-total-conversion,Hubertzhang/ingress-intel-total-conversion,sndirsch/ingress-intel-total-conversion,sndirsch/ingress-intel-total-conversion,McBen/ingress-intel-total-conversion,3ch01c/ingress-intel-total-conversion,McBen/ingress-intel-total-conversion,3ch01c/ingress-intel-total-conversion,Hubertzhang/ingress-intel-total-conversion,Hubertzhang/ingress-intel-total-conversion,3ch01c/ingress-intel-total-conversion,3ch01c/ingress-intel-total-conversion,McBen/ingress-intel-total-conversion,Hubertzhang/ingress-intel-total-conversion