sd: disable pdf import tests

[Ashod Nakashian]

Hi Stephan,

On 12/16/19 11:59 AM, Stephan Bergmann wrote:
>
> What's the reason for this change, and/or are there plans to enable 
> the tests again?  (`git log -SIMPORT_PDF_ELEMENTS` shows this to be 
> the only commit ever mentioning that identifier, so the tests are 
> indeed disabled since then.) 


The tests are conditional on IMPORT_PDF_ELEMENTS because with the PDFium 
import logic, PDFs are imported as images, not individual elements 
(users can break the image into editable elements from the UI).

Since these tests rely on importing PDF elements individually, the 
PDFium importing logic breaks them.

Hope this makes sense.

Thanks,
-Ash