Revert "add a pdf link search special case"
Revert "add a pdf link search special case"

This reverts commit d1bd9bdb40eda74f04c31ede0ab7d7c8c198d7da.

Impactstory/oadoi,Impactstory/oadoi,Impactstory/sherlockoa,Impactstory/oadoi,Impactstory/sherlockoa