remove maxmind dependency and old GeoIP.dat files
remove maxmind dependency and old GeoIP.dat files

lqch14102/lantern,getlantern/lantern-java,getlantern/lantern-java,lqch14102/lantern,getlantern/lantern-java,lqch14102/lantern,lqch14102/lantern,lqch14102/lantern,lqch14102/lantern,getlantern/lantern-java,getlantern/lantern-java,getlantern/lantern-java,getlantern/lantern-java,lqch14102/lantern,getlantern/lantern-java,lqch14102/lantern,lqch14102/lantern,getlantern/lantern-java