rpb-desktop-image: remove glmark2
rpb-desktop-image: remove glmark2

In oe-core/master:

ERROR: glmark2 was skipped: Recipe is blacklisted: BROKEN: fails to build with
gcc-6

We will add it back once the issue is fixed.

Signed-off-by: Nicolas Dechesne <05fca36dfcf68f7e1c9eaf62b074676ab50a133b@linaro.org>

fboudra/meta-rpb,96boards/meta-rpb,fboudra/meta-rpb,96boards/meta-rpb,fboudra/meta-rpb