Fix linting

Makefile

@@ -229,6 +229,9 @@ cli-build-results:
 check: test fmt-check vet lint staticcheck
 
 test: .PHONY
+	go test $(shell go list ./... | grep -vE 'ntfy/(test|examples|tools)')
+
+testv: .PHONY
 	go test -v $(shell go list ./... | grep -vE 'ntfy/(test|examples|tools)')
 
 race: .PHONY

server/server.go

@@ -1431,10 +1431,6 @@ func (s *Server) execManager() {
 		Info("Server stats")
 }
 
-func (s *Server) expireVisitors() {
-
-}
-
 func (s *Server) runSMTPServer() error {
 	s.smtpServerBackend = newMailBackend(s.config, s.handle)
 	s.smtpServer = smtp.NewServer(s.smtpServerBackend)