Remove unused var

server/visitor.go

@@ -1,7 +1,6 @@
 package server
 
 import (
-	"errors"
 	"fmt"
 	"heckel.io/ntfy/log"
 	"heckel.io/ntfy/user"
@@ -47,10 +46,6 @@ const (
 	visitorEmailLimitBurstMax  = 150
 )
 
-var (
-	errVisitorLimitReached = errors.New("limit reached")
-)
-
 // visitor represents an API user, and its associated rate.Limiter used for rate limiting
 type visitor struct {
 	config              *Config