Update: As you may know already, [SONAR-17194] - Jira and We’re making some changes to SonarQube telemetry document the reasons for the change. The Statistics object is therefore intentionally removed.
In [SONAR-17578] - Jira for SonarQube 9.8, we will fix LOC information back to GET api/system/info API, which should allow you to obtain LOC information now.