remove_infopath_form_personalization_from_list.ps1

$web = get-spweb "<web site URL>"
  
function removeCustomInfopathListForms([String]$folderName, [Microsoft.SharePoint.SPContentType]$ct)
{
  write-host Removing custom Infopath list form on $folderName

  # Remove InfoPath customisatin
  $ct.ResourceFolder.Properties["_ipfs_infopathenabled"] = "False"
  # Reset default form URL
  $ct.NewFormUrl = ""
	$ct.EditFormUrl = ""
	$ct.DisplayFormUrl = ""
  $ct.ResourceFolder.Update()     
     
	write-host "Liste:" $list.Title "  CT:" $strContentType
     
  $folder = $web.getFolder($folderName)
  write-host Delete files from folder: $folder.Name
     
  # "Delete the InfoPath Form from the server"
  for ($i = $folder.Files.count -1; $i -gt -1; $i--)
  {
       write-host deleting $folder.Files[$i].Name
       $folder.Files[$i].delete()
  }
     
  $web.dispose()
}
  
# Check content type in all lists for InfoPath forms
foreach($list in $web.Lists) { 
    foreach ($ct in $list.ContentTypes){
        if ($ct.ResourceFolder.Properties["_ipfs_infopathenabled"] -eq "True"){
            $strfolderName =$web.url + "/" + $ct.ResourceFolder.URL
            write-host "The following url is using a custom infopath list form:"  $strFolderName                               
            removeCustomInfopathListForms -folderName $strfolderName -ct $ct
        }
    }
}
$web.Dispose()
write-host "Script ended"