feat(dedicated): remove postinstallationscript(link/return) options

[x] Try to keep pull requests small so they can be easily reviewed.
[x] Commits are signed-off
[x] Only FR translations have been updated
[x] Branch is up-to-date with target branch
[x] Lint has passed locally
[x] Standalone app was ran and tested locally
[x] Ticket reference is mentioned in linked commits (internal only) ~Breaking change is mentioned in relevant commits~

Description

Remove hardcoded postInstallationScriptLink and postInstallationScriptReturn options in OS installation wizard

ref: MANAGER-14638