Delete a row directly in HSDL

Summary:

Content (please ensure you mask any confidential information):

When trying to assign a performance document via HSDL from the Process Mass Actions for Performance Documents page with the Manager criteria - all direct reports of the manager should reflect on the HSDL. The client wants to be able to remove some direct reports from the extracted list that they don't want to be assigned to a document. We tried to remove them directly from the HSDL, however when we save and refresh - the employee data row that was manually deleted goes back.

The questions is, can we delete manually and directly on the HSDL a data row so that those specific employees won't be assigned to a document?