This functions is called when the plugin is uninstalled. The following actions are performed:
Actions are processed on the current blog and are repeated for every blog on a multisite installation. Must be called from the dashboard (WP_UNINSTALL_PLUGIN defined). User must have the proper privileges (activate_plugins).
SETTINGS_URL = 'options-general.php?page=wpdataaccess'
WEBSITE_URL = 'https://wpdataaccess.com/'