How to Hide National Identifier field from the career site

Summary:

Our requirement is to collect the candidate's Date of Birth in the job application flow and when the candidate is moved to HR that date of birth should also be moved in the details of the pending worker. In order to achieve that we have added Sensitive Personal Information block in the job application flow configuration, but National Identifier also follows in that block and we would like to know if there is any way to hide the National Identifier from the job application flow.