Remove broken, redundant struct tag

auth/auth.go

@@ -21,7 +21,7 @@ type AuthConfig struct {
 	Username string `json:"username"`
 	Password string `json:"password"`
 	Email    string `json:"email"`
-	rootPath string `json:-`
+	rootPath string
 }
 
 func NewAuthConfig(username, password, email, rootPath string) *AuthConfig {