How can I delete a sales tax agency from the sales Tax Liability report?

Hello there, @JeanG. Allow me to share some useful information about the sales tax liability report.

Removing specific tax agencies in the report is not possible. But since these two already have zero balances, what we can do is customize the report to hide these two. Here's how:

1. In the Sales Tax Liability report page, click Customize.
2. Select the Display section.
3. Click Advance, then a small screen will pop up.
4. Under DISPLAY ROWS, tick Non-zero. This will hide the two agency that have the zero balance.
5. Click OK.

Additionally, you can also export the report to your spreadsheet and manually delete the agencies. 

On top of that, I've added this reference that helps you modify your reports and save its current customization settings for future use: Memorize Reports in QuickBooks Online.

Let me know if you have further concerns about your sales tax. I'll be here to provide assistance. Happy Holidays.