I removed sample data by using ssh command bin/magento sampledata:remove . After completed the deletion process i can't see any changes on my site . Only the product images got deleted . All the sample products , orders, cart and catalog rules are still available on backend . Is there any other way to delete sample datas completely from the site ?
I didn't tried but following the documentation you can remove the module but not the data into the database:
Also, the remove command description says: "Remove all sample data packages from composer.json"
Finally, the isn't an uninstall script for the module so... I guess you can't remove the data from the database tables.