In situations where you do not wish to deliver any of the invoices on the Pending Delivery tab, you can remove them in bulk as follows:

1. In the Billing module, select the Pending Delivery tab.

   

2. For the desired invoice, click the hyper-link for the Delivery Method.

   

3. Click the Advanced Options check box. 
4. From the Bulk Actions, check the Clear All Pending Email Invoices and Clear All Pending Print Invoices.
5. Click Done.