Hi,
Thank you for posting in Symantec community.
I would be glad to answer your query.
To delete GUI password follow the steps:
Open the registry
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\Symantec Endpoint Protection\SMC
Change the value for SmcGuiHasPassword from 1 to 0
Restart the SMC service
To delete uninstall password follow the steps:
HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\Symantec Endpoint Protection\AV\AdministratorOnly\Security\UseVPUninstallPassword
Set to 0 to disable it.
Or
Use the cleanwipe tool to remove SEP.
You need to contact support to receive latest cleanwipe tool.