Hi,
I deployed successfully using the below switches for install and uninstall. Kindly adjust the network share/ repository location accordingly.
Silent Installtion Command Line
C:\DesktopCentral\SoftwareRepository\SAP GUI\WIN32\Setup\NwSapSetup.exe /Silent /Product="SAPGUI"
Silent Uninstallation Command Line
NwSapSetup.exe /Silent /Uninstall /Product="SAPGUI"
Thanks.