chore: only use lb endpoint in registry (#582)

Author: WasinWatt

testnets/embr_old/chain.json

@@ -40,56 +40,26 @@
   },
   "apis": {
     "rpc": [
-      {
-        "address": "https://rpc-0-embr-1.anvil.asia-southeast.initia.xyz"
-      },
-      {
-        "address": "https://rpc-1-embr-1.anvil.asia-southeast.initia.xyz"
-      },
       {
         "address": "https://rpc-embr-1.anvil.asia-southeast.initia.xyz"
       }
     ],
     "rest": [
-      {
-        "address": "https://rest-0-embr-1.anvil.asia-southeast.initia.xyz"
-      },
-      {
-        "address": "https://rest-1-embr-1.anvil.asia-southeast.initia.xyz"
-      },
       {
         "address": "https://rest-embr-1.anvil.asia-southeast.initia.xyz"
       }
     ],
     "grpc": [
-      {
-        "address": "grpc-0-embr-1.anvil.asia-southeast.initia.xyz:443"
-      },
-      {
-        "address": "grpc-1-embr-1.anvil.asia-southeast.initia.xyz:443"
-      },
       {
         "address": "grpc-embr-1.anvil.asia-southeast.initia.xyz:443"
       }
     ],
     "json-rpc": [
-      {
-        "address": "https://jsonrpc-0-embr-1.anvil.asia-southeast.initia.xyz"
-      },
-      {
-        "address": "https://jsonrpc-1-embr-1.anvil.asia-southeast.initia.xyz"
-      },
       {
         "address": "https://jsonrpc-embr-1.anvil.asia-southeast.initia.xyz"
       }
     ],
     "json-rpc-websocket": [
-      {
-        "address": "wss://jsonrpc-ws-0-embr-1.anvil.asia-southeast.initia.xyz"
-      },
-      {
-        "address": "wss://jsonrpc-ws-1-embr-1.anvil.asia-southeast.initia.xyz"
-      },
       {
         "address": "wss://jsonrpc-ws-embr-1.anvil.asia-southeast.initia.xyz"
       }