There are two ways to uninstall this extension on your server, on the one hand via the graphical interface of the Contao Manager and on the other hand via the command line.
If you want to uninstall the extension, go to the “Packages” tab in the Contao Manager and click on the “Remove” button next to the extension. Click on “Apply changes” to start the uninstallation.
The uninstallation can now take several minutes. Once the extension has been uninstalled, you will need to update the database if necessary.
The remove command removes the extension from composer.json and deletes the code from the project. A database update should then be carried out.
composer remove jedocodes/contao-marquee-slider-bundle
vendor/bin/contao-console contao:migrate