Removal of logging drawing and usage statistics

Usage and drawing statistics are no longer logged and the following interfaces have been removed.

Removed:
public class JsonDrawingReport extends JsonStatisticsReport
public class JsonUsageReport extends JsonStatisticsReport
public class JsonUsageReporterSP extends JsonReporterSP
public class StatsUploader
public class StatsUsageDB
public class UsageSnapshot
public class UsageData
public void testUsageSaveAndLoad(UsageSnapshot snapshot)

Removal of logging drawing and usage statistics

Usage and drawing statistics are no longer logged.