Fix acme.json file automatic creation

acme/localStore_unix.go

@@ -1,28 +0,0 @@
-// +build !windows
-
-package acme
-
-import (
-	"fmt"
-	"os"
-)
-
-// Check file permissions and content size
-func checkFile(name string) (bool, error) {
-	f, err := os.Open(name)
-	if err != nil {
-		return false, err
-	}
-	defer f.Close()
-
-	fi, err := f.Stat()
-	if err != nil {
-		return false, err
-	}
-
-	if fi.Mode().Perm()&0077 != 0 {
-		return false, fmt.Errorf("permissions %o for %s are too open, please use 600", fi.Mode().Perm(), name)
-	}
-
-	return fi.Size() > 0, nil
-}