src/vs/workbench/browser/actions/workspaceActions.ts/RemoveRootFolderAction/run
class RemoveRootFolderAction:	override async run(accessor: ServicesAccessor): Promise<void> {
		const commandService = accessor.get(ICommandService);
		const workspaceEditingService = accessor.get(IWorkspaceEditingService);

		const folder = await commandService.executeCommand<IWorkspaceFolder>(PICK_WORKSPACE_FOLDER_COMMAND_ID);
		if (folder) {
			await workspaceEditingService.removeFolders([folder.uri]);
		}
	}