src/vs/workbench/services/workingCopy/common/workingCopyBackupService.ts/NativeWorkingCopyBackupServiceImpl/doDiscardBackup
class NativeWorkingCopyBackupServiceImpl:	private async doDiscardBackup(backupResource: URI): Promise<void> {
		const model = await this.ready;

		return this.ioOperationQueues.queueFor(backupResource).queue(async () => {
			await this.deleteIgnoreFileNotFound(backupResource);

			model.remove(backupResource);
		});
	}