Gets files of a specific size then delete them

Remove-FilesBySize.ps1

Add-PSSnapin Microsoft.SharePoint.Powershell

function Get-FileOfSize
{
    [CmdletBinding()]
    param
    (
        [parameter(Mandatory=$true)][string]$SiteUrl,
        [parameter(Mandatory=$true)][int]$Size
    )

    begin
    {
    }
    process
    {
        $site = Get-SPSite -Identity $SiteUrl

        foreach( $web in $site.AllWebs )
        {
            foreach( $library in $web.GetListsOfType([Microsoft.SharePoint.SPBaseType]::DocumentLibrary) )
            {
                if( -not $library.Hidden )
                {
                    foreach( $item in $library.Items )
                    {
                        if( $item.File.Length -eq $Size )
                        {
                            [PSCustomObject] @{
                                Site    = $site.Url
                                Web     = $web.Url
                                List    = $library.Title
                                FileUrl = $site.MakeFullUrl($item.File.Url)
                                Size    = $item.File.Length
                                Author  = $item.File.Author
                                Created = $item.File.TimeCreated
                            }
                        }
                    }
                }
            }

            $web.Dispose()
        }

        $site.Dispose()
    }
    end
    {
    }
}

function Remove-File
{
    [CmdletBinding()]
    param
    (
        [parameter(Mandatory=$true)][string]$FileUrl
    )

    begin
    {
    }
    process
    {
        $site = New-Object Microsoft.SharePoint.SPSite($FileUrl)

        $web = $site.OpenWeb()

        $file = $web.GetFile($FileUrl)

        if( $file.Exists )
        {
            #$file.Recycle()
            $file.Delete()
        }
        else
        {
            Write-Error "File Not Found: $FileUrl"
        }

        $web.Dispose()
        $site.Dispose()
    }
    end
    {
    }
}

$files = Get-FileOfSize -SiteUrl "https://sharepoint.2016.contoso.com/sites/teamsite" -Size 0
$files | Export-Csv -Path "Files.csv" -NoTypeInformation

foreach( $file in $files )
{
    Remove-File -FileUrl $file.FileUrl
}