Revert "Enabling HW acceleration with libvaapi on Intel by default"

Revert "Enabling HW acceleration with libvaapi on Intel by default"

Due to:
Can't install libva-dev-1.7.0-r0@corei7_64: Can't install libva-egl1-1.7.0-r0@corei7_64: no package provides libva-x11

See
https://jenkins-new.automotivelinux.org/job/sandbox-snapshot-master/MACHINE=intel-corei7-64,label=agl-test-slave/146/console

We need to fix libva through a bbappend.

This reverts commit c678e2d040c6071f3b6bec593d3c6271504a92e7.

Change-Id: I486aa82484f8b62c65b7ae1a7607f75ade26ce91
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>