remove duplicate GetDefaultDataDir (already exists in util.cpp)
remove duplicate GetDefaultDataDir (already exists in util.cpp)

razor-coin/razor,coinkeeper/2015-06-22_18-46_razor,coinkeeper/2015-06-22_18-46_razor,razor-coin/razor,coinkeeper/2015-06-22_18-46_razor,coinkeeper/2015-06-22_18-46_razor,razor-coin/razor,neutrinofoundation/neutrino-digital-currency,neutrinofoundation/neutrino-digital-currency,neutrinofoundation/neutrino-digital-currency,razor-coin/razor,razor-coin/razor,neutrinofoundation/neutrino-digital-currency,coinkeeper/2015-06-22_18-46_razor