Remove enforce_pat/ssh_expiration from application_settings table

Overview

As part of the process of removing the ability to unenforce PAT expiration we need to drop the enforce_pat_expiration column from the application_settings table.

We should also drop the column for enforce_ssh_expiration too.

Proposal

• The column will be ignored in %15.0 in this MR.
• In %15.1, we need to drop the column as per the process in the migration style guide.