remove vaDisplayIsValid from libva-glx
remove vaDisplayIsValid from libva-glx

Signed-off-by: Austin Yuan <f447c34e4ebcef84a81b40a8d4dbc448a14e5570@gmail.com>

CyanogenMod/android_hardware_intel_libva,zzhhui/libva,01org/libva-cros,01org/iotg-lin-gfx-libva,gbeauchesne/libva,01org/libva-cros,01org/iotg-lin-gfx-libva,android-ia/hardware_intel_libva,chenxianqin/vaapi-libva,zzhhui/libva,pma1/libva,01org/libva-cros,gbeauchesne/libva,halleyzhao/libva-fdo,CyanogenMod/android_hardware_intel_libva,halleyzhao/libva-fdo,pma1/libva,android-ia/hardware_intel_libva,pma1/libva,CyanogenMod/android_hardware_intel_libva,Distrotech/libva,android-ia/hardware_intel_libva,01org/iotg-lin-gfx-libva,zzhhui/libva,gbeauchesne/libva,chenxianqin/vaapi-libva,halleyzhao/libva-fdo,Distrotech/libva,chenxianqin/vaapi-libva,Distrotech/libva