1. Login to your WordPress admin dashboard.
2. Under the dashboard ., hover your mouse over "Plugins" and then click on "Installed Plugins".
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3. If you want to deactivate the "Hello Dolly" plugin, for example, click on "Deactivate", which appears at bottom of the "Hello Dolly" text.
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How to Delete a Plugin in WordPress?
Once a plugin is deactivated, the delete option will appear.
Go to the "Installed Plugins" list and. "Delete" link which shows at the bottom of the deactivated plugin"s name. It will display a confirmation. Press "OK" and the plugin will be removed.
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