How to delete all debug logs from an org in Salesforce?

ApexLogRepresents a debug log containing information about a transaction, including information about Apex, Visualforce, and workflow and validation rules.

1. Run the below SOQL Query in Developer Console using Query Editor.

SELECT Id FROM ApexLog

2. Select the rows and click Delete Row Button.

Reference Link - https://help.salesforce.com/articleView?id=code_debug_log_delete.htm&type=5