api: do not batch email notifications

Closes https://gitlab.com/commento/commento/issues/234

api/utils_misc.go

@@ -10,16 +10,6 @@ func concat(a bytes.Buffer, b bytes.Buffer) []byte {
 	return append(a.Bytes(), b.Bytes()...)
 }
 
-func nameFromEmail(email string) string {
-	for i, c := range email {
-		if c == '@' {
-			return email[:i]
-		}
-	}
-
-	return email
-}
-
 func exitIfError(err error) {
 	if err != nil {
 		fmt.Printf("fatal error: %v\n", err)