You can delete automation permanently if it is not required.
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Steps
Click on Create.
Select Automation from the dropdown menu.
You are on the Create Automation page.
Fill in the details, to create an automation.Create an Automation
Press Save.
Now, you will be redirected to the Manage Automation page. (It can be also accessed from My Apps > Automation only if you have created at least one automation).
On the Manage Automation page in the Action column, you will find two options to Edit and Delete.
Click Delete to delete the automation.
The automation is deleted permanently.