src/vs/platform/workspaces/electron-main/workspacesManagementMainService.ts/WorkspacesManagementMainService/deleteUntitledWorkspace
class WorkspacesManagementMainService:	async deleteUntitledWorkspace(workspace: IWorkspaceIdentifier): Promise<void> {
		if (!this.isUntitledWorkspace(workspace)) {
			return; // only supported for untitled workspaces
		}

		// Delete from disk
		await this.doDeleteUntitledWorkspace(workspace);

		// unset workspace from profiles
		if (this.userDataProfilesMainService.isEnabled()) {
			this.userDataProfilesMainService.unsetWorkspace(workspace);
		}

		// Event
		this._onDidDeleteUntitledWorkspace.fire(workspace);
	}