Remove coin option

config.example.json

@@ -3,7 +3,6 @@
     "bypassAddressValidation": false,
 
     "threads": 2,
-    "coin": "monero",
 
     "stratum": {
         "timeout": "15m",

go-pool/pool/pool.go

@@ -6,8 +6,7 @@ type Config struct {
 	Stratum                 Stratum `json:"stratum"`
 	Daemon                  Daemon  `json:"daemon"`
 
-	Threads int    `json:"threads"`
+	Threads int `json:"threads"`
-	Coin    string `json:"coin"`
 
 	NewrelicName    string `json:"newrelicName"`
 	NewrelicKey     string `json:"newrelicKey"`