Public/Remove-DefaultParameterValue.ps1

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function Remove-DefaultParameterValue {
    [CmdletBinding(SupportsShouldProcess, ConfirmImpact='Low')]
    param(
        [Parameter(Mandatory)]
        [Alias('Name')]
        [ValidateNotNullOrEmpty()]
        [string]
        $CmdletName
        ,
        [Parameter(Mandatory)]
        [Alias('Parameter')]
        [ValidateNotNullOrEmpty()]
        [string]
        $ParameterName
    )
    
    begin {
        if (-not $PSBoundParameters.ContainsKey('Confirm')) {
            $ConfirmPreference = $PSCmdlet.SessionState.PSVariable.GetValue('ConfirmPreference')
        }
        if (-not $PSBoundParameters.ContainsKey('WhatIf')) {
            $WhatIfPreference = $PSCmdlet.SessionState.PSVariable.GetValue('WhatIfPreference')
        }
    }
    
    process {
        if ($Force -or $PSCmdlet.ShouldProcess("Remove parameter '$ParameterName' from cmdlet '$CmdletName'?")) {
            $PSDefaultParameterValues.Remove("$($CmdletName):$ParameterName")
        }
    }
}