AsJob not implemented for Remove-AzResourceGroupDeployment

## Description
According to #9776, Az PowerShell v3 was supposed to implement the `-AsJob` switch parameter for all cmdlets, including `Remove-AzResourceGroupDeployment`

However, I still cannot use `-AsJob` for `Remove-AzResourceGroupDeployment` but I can for other cmdlets such as `Remove-AzDeployment`

Are there any plans to implement this?

## Steps to reproduce

```powershell
Remove-AzResourceGroupDeployment -ResourceGroupName $foo -Name $bar -AsJob
```

## Module versions

* Applicable as of Az PS v6.5.0

## Error output

```powershell
A parameter cannot be found that matches parameter name 'AsJob'.
```