When I run the command: ./console core:delete-logs-data --dates=2015-11-20,2015-11-23 it asks the following question:
You are about to delete log data. This action cannot be undone, are you sure you want to continue? (Y/N) which defaults to No

This is fine, but when I add the option --no-interaction it still defaults to No so doesn't do anything.

I could not find a setting for this, so I changed the function askForDeleteConfirmation in plugins/CoreAdminHome/Commands/DeleteLogsData.php to this

private function askForDeleteConfirmation(InputInterface $input, OutputInterface $output)
{
    if ($input->getOption('no-interaction')) {
        return true;
    }
    $helper   = $this->getHelper('question');
    $question = new ConfirmationQuestion('<comment>You are about to delete log data. This action cannot be undone, are you sure you want to continue? (Y/N)</comment> ', false);

    return $helper->ask($input, $output, $question);
}

Could this fix be added in a next release?