remove non-exist cmdlets in psd1

Author: VeryEarly

src/Network/Network/Az.Network.psd1

@@ -577,18 +577,6 @@ CmdletsToExport = 'Add-AzApplicationGatewayAuthenticationCertificate',
                'New-AzNetworkManagerSecurityAdminRule', 
                'Remove-AzNetworkManagerSecurityAdminRule', 
                'Set-AzNetworkManagerSecurityAdminRule', 
-               'Get-AzNetworkManagerSecurityUserConfiguration', 
-               'New-AzNetworkManagerSecurityUserConfiguration', 
-               'Remove-AzNetworkManagerSecurityUserConfiguration', 
-               'Set-AzNetworkManagerSecurityUserConfiguration', 
-               'Get-AzNetworkManagerSecurityUserRuleCollection', 
-               'New-AzNetworkManagerSecurityUserRuleCollection', 
-               'Remove-AzNetworkManagerSecurityUserRuleCollection', 
-               'Set-AzNetworkManagerSecurityUserRuleCollection', 
-               'Get-AzNetworkManagerSecurityUserRule', 
-               'New-AzNetworkManagerSecurityUserRule', 
-               'Remove-AzNetworkManagerSecurityUserRule', 
-               'Set-AzNetworkManagerSecurityUserRule', 
                'Get-AzNetworkManagerActiveConnectivityConfigurationList', 
                'Get-AzNetworkManagerActiveSecurityAdminRuleList', 
                'Get-AzNetworkManagerActiveSecurityUserRuleList',