src/vs/platform/workspaces/electron-main/workspacesManagementMainService.ts/WorkspacesManagementMainService/doDeleteUntitledWorkspaceSync
class WorkspacesManagementMainService:	private doDeleteUntitledWorkspaceSync(workspace: IWorkspaceIdentifier): void {
		const configPath = originalFSPath(workspace.configPath);
		try {

			// Delete Workspace
			rimrafSync(dirname(configPath));

			// Mark Workspace Storage to be deleted
			const workspaceStoragePath = join(this.environmentMainService.workspaceStorageHome.fsPath, workspace.id);
			if (existsSync(workspaceStoragePath)) {
				writeFileSync(join(workspaceStoragePath, 'obsolete'), '');
			}
		} catch (error) {
			this.logService.warn(`Unable to delete untitled workspace ${configPath} (${error}).`);
		}
	}