Truly Uninstalling Modules
Without disabling/uninstalling the modules, you deleted and placed them in different folder. So here the beauty is Drupal will automatically scan for modules in modules/ and sites/ folder. Thta's why for Drupal the module is still in use.

Disabling a module means, the module is currently not in use, however its data(like DB tables), configuration and everything will kept.

Uninstalling a module means, the module is completely removed. Its data, configuration everything will be cleared.

However the particular module folder will not be deleted.