1. Login to your WordPress admin dashboard.
2. Under the dashboard menu, hover your mouse over "Plugins" and then click on "Installed Plugins".

3. If you want to deactivate the €śHello Dolly€ť plugin, for example, click on €śDeactivate€ť, which appears at bottom of the €śHello Dolly€ť text.

How to Delete a Plugin in WordPress?
Once a plugin is deactivated, the delete option will appear.
Go to the €śInstalled Plugins€ť list and click on the €śDelete€ť link which shows at the bottom of the deactivated plugin€™s name. It will display a confirmation. Press €śOK€ť and the plugin will be removed.
