Newscoop\Service\Implementation\ThemeManagementServiceLocal::removeTheme PHP Method

    public function removeTheme($theme)
    {
        Validation::notEmpty($theme, 'theme');
        if (!$theme instanceof Theme) {
            $theme = $this->findById($theme);
        }
        $themePath = $theme->getPath();
        $themes = array();
        if (!$this->getOutputSettingIssueService()->isThemeUsed($themePath, $themes)) {
            $this->rrmdir($this->toFullPath($themePath));
            $this->getSyncResourceService()->clearAllFor($themePath);
            // Reset the theme configs cache so also the new theme will be avaialable
            $this->cacheThemeConfigs = NULL;
            return true;
        }
        throw new RemoveThemeException(implode(', ', $themes));
    }