Hi, tah-difinitigrou. 

Thank you for reaching back to the Community. Deleting your employee's deduction in QuickBooks Payroll Core needs to be done individually. I'll show you how to do it: 

1. Click the Payroll menu, and select Employees. 
2. Select the specific employee you want to delete the deduction. 
3. On the column 4. Press the specific deduction you want to eliminate by clicking the trash icon. 
4. Press Yes to confirm. 

For more detailed information, you can check out this article: Change or delete a payroll deduction item. 

That's it! Please let me know how it goes. I want to ensure everything has been taking care of. Or if you have any other questions about QuickBooks Payroll let me know, I'm just a post away. Have a great day, and take care!