Revert "libass: Fix static linking."
Revert "libass: Fix static linking."

This reverts commit c7090eff1cfe0d4fa676dd484456c70b3efef43d.

xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc