How to Remove a Plugin
Any plugin can be uninstalled in two ways: from the plugins page in WordPress admin, and manually through FTP/File manager.
From WordPress admin
To do it, log in to your WordPress admin panel and go to Plugins and click on Deactivate.
Then click on Delete.
The manual removing involves delete plugin folder from your webserver through a FTP software.
Go to folder to wp-content/plugins directory and remove your plugin_name folder.