The bitbake call before each build of a recipe was not required.
Commented out the fresh build, as it currently does not show more
problems than simply building in a shared environment.
Avoiding a fresh environment for each build decreases the runtime
of the test dramatically.

In the previous commit, I accidently also edited another line than intended and
missed to see the accident before committing.
This commit reverts that accident.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>

This prepares the script to produce directly into the git submodule.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>