You can delete a survey in Learn from your account.
Note: Some features may be restricted based on permissions for your user role.
Open Author Menu

In the Global Navigation menu, click the Author icon. Then, click the Surveys menu option.
Note: The Global Navigation menu may differ depending on what is enabled in your account.
Locate Survey

On the Surveys page, locate the survey you want to delete. You can use the Search field [1] or the Sort & Filter drop-down menu [2].
Delete Survey

Click the Remove icon.
Confirm Delete

To confirm, click the Delete link.