Remove unused reject methods

constant/rule.go

@@ -34,10 +34,6 @@ const (
 )
 
 const (
-	RuleActionRejectMethodDefault            = "default"
-	RuleActionRejectMethodReset              = "reset"
-	RuleActionRejectMethodNetworkUnreachable = "network-unreachable"
-	RuleActionRejectMethodHostUnreachable    = "host-unreachable"
-	RuleActionRejectMethodPortUnreachable    = "port-unreachable"
-	RuleActionRejectMethodDrop               = "drop"
+	RuleActionRejectMethodDefault = "default"
+	RuleActionRejectMethodDrop    = "drop"
 )