developer/api/v1/versions/Remove-Version.ps1

function Remove-Version
{
    [CmdletBinding(SupportsShouldProcess)]
    param(
        [Parameter(Mandatory)]
        [string] $AppAlias,
        [Parameter(Mandatory)]
        [string] $VersionAlias
    )

    if ($PSCmdlet.ShouldProcess($VersionAlias))
    {
        return Invoke-Api Delete "/developer/api/v1/versions/$AppAlias/$VersionAlias"
    }
}