contribs: gnutls: Disable hardware acceleration on 64bits winrt builds
contribs: gnutls: Disable hardware acceleration on 64bits winrt builds

It uses some forbidden functions

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