Update PSDDrivers.ps1

During the task sequence execution, there is a noticeable pause(by a few seconds) when the system attempts to locate a specific item, such as a .wim file, that does not exist. Additionally, the wizard will provide more detailed information during the deployment phase in PSDDrivers

if there are no ZIPs or no WIMs, the foreach loop will not run, so that should not be consuming time

See the comment from Mikael Nystrom, issue is solved via other code change.