How to delete debug logs in bulk in Salesforce?

Tooling API Mass Debug Logs Deletion Steps
1. Open the Developer Console
2. Select the Query Editor tab near the bottom of the console page
3. Select the Use Tooling API check box.
4. Execute the query 'select id from apexlog'
5. Query Results will list available rows to be deleted6. Use the keys Shift and Arrow Down together to select all rows for deletion
7. Click Delete Row.