Hi [email protected],
Sorry for misunderstanding.
For example :-
If you want to delete revslider plugins, then
goto public_html -> theme folder(WordPress) -> wp-content -> plugins
Now you can see the plugins list. Do not delete other plugins. We recommended you to delete only the plugins you need to remove. Other Plugins you must not delete. Delete the revslider Plugins and update your latest version of plugins from your dashboard or if you want to delete it from ftp then first unzip the plugins and then only upload it and activate it from your admin dashboard.
The content will not be lost because it is stored in your database. But you need to install the new version of plugins to display the content.
We recommended you to backup the plugins file before going to delete the plugins. After backup of plugins only you delete the old plugins.
Thank you!