RandomX: removed rx/loki

Loki forks to PoS on October 9th.

src/crypto/rx/RxAlgo.cpp

@@ -43,9 +43,6 @@ const RandomX_ConfigurationBase *xmrig::RxAlgo::base(Algorithm::Id algorithm)
     case Algorithm::RX_WOW:
         return &RandomX_WowneroConfig;
 
-    case Algorithm::RX_LOKI:
-        return &RandomX_LokiConfig;
-
     case Algorithm::RX_ARQ:
         return &RandomX_ArqmaConfig;