Remove persistence again.

storage.go

@@ -9,21 +9,19 @@ import (
 type Listener func(status SpaceStatus)
 
 type Storage struct {
-	filePath   string
-	persistent bool
-	status     SpaceStatus
+	filePath string
+	status   SpaceStatus
 }
 
-func Open(filePath string, persistent bool) (*Storage, error) {
+func Open(filePath string) (*Storage, error) {
 	status, err := readFile(filePath)
 	if err != nil {
 		return nil, fmt.Errorf("error reading status: %s", err)
 	}
 
 	return &Storage{
-		filePath:   filePath,
-		persistent: persistent,
-		status:     *status,
+		filePath: filePath,
+		status:   *status,
 	}, nil
 }