remove usage of cn_v7 if cn_v8 is enabled

Cleanup missing change from #2101

xmrstak/jconf.cpp

@@ -98,9 +98,9 @@ xmrstak::coin_selection coins[] = {
 	{ "cryptonight_lite",    {cryptonight_aeon, cryptonight_lite, 255u},          {cryptonight_aeon, cryptonight_aeon, 0u},     nullptr },
 	{ "cryptonight_lite_v7", {cryptonight_aeon, cryptonight_aeon, 0u},            {cryptonight_aeon, cryptonight_aeon, 0u},     nullptr },
 	{ "cryptonight_lite_v7_xor", {cryptonight_aeon, cryptonight_ipbc, 255u},      {cryptonight_aeon, cryptonight_aeon, 0u}, nullptr },
-	{ "cryptonight_superfast",   {cryptonight_heavy, cryptonight_superfast, 255u},{cryptonight_heavy, cryptonight_superfast, 0u},   nullptr }, 
+	{ "cryptonight_superfast",   {cryptonight_heavy, cryptonight_superfast, 255u},{cryptonight_heavy, cryptonight_superfast, 0u},   nullptr },
 	{ "cryptonight_v7",      {cryptonight_monero_v8, cryptonight_monero, 255u},   {cryptonight_monero_v8, cryptonight_monero_v8, 0u}, nullptr },
-	{ "cryptonight_v8",      {cryptonight_monero, cryptonight_monero_v8, 255u},   {cryptonight_monero_v8, cryptonight_monero_v8, 0u}, nullptr },
+	{ "cryptonight_v8",      {cryptonight_monero_v8, cryptonight_monero_v8, 255u},   {cryptonight_monero_v8, cryptonight_monero_v8, 0u}, nullptr },
 	{ "cryptonight_v7_stellite", {cryptonight_monero_v8, cryptonight_stellite, 255u}, {cryptonight_monero_v8, cryptonight_monero_v8, 0u}, nullptr },
 	{ "freehaven",           {cryptonight_heavy, cryptonight_superfast, 255u},    {cryptonight_heavy, cryptonight_superfast, 0u},   nullptr },
 	{ "graft",               {cryptonight_monero_v8, cryptonight_monero_v8, 0u},    {cryptonight_monero_v8, cryptonight_monero_v8, 0u}, nullptr },