clean code

core/hy/mmdb.go

@@ -1,39 +1,16 @@
 package hy
 
 import (
-	"io"
-	"net/http"
 	"os"
 
 	"github.com/oschwald/geoip2-golang"
 	"github.com/sirupsen/logrus"
-	"github.com/spf13/viper"
 )
 
-func downloadMMDB(filename string) error {
-	resp, err := http.Get(viper.GetString("mmdb-url"))
-	if err != nil {
-		return err
-	}
-	defer resp.Body.Close()
-
-	file, err := os.Create(filename)
-	if err != nil {
-		return err
-	}
-	defer file.Close()
-
-	_, err = io.Copy(file, resp.Body)
-	return err
-}
-
 func loadMMDBReader(filename string) (*geoip2.Reader, error) {
 	if _, err := os.Stat(filename); err != nil {
 		if os.IsNotExist(err) {
 			logrus.Info("GeoLite2 database not found, downloading...")
-			if err := downloadMMDB(filename); err != nil {
-				return nil, err
-			}
 			logrus.WithFields(logrus.Fields{
 				"file": filename,
 			}).Info("GeoLite2 database downloaded")