build_wrapper: Remove 'location' subfolder from examples

Task-number: QTBUG-34967
Change-Id: Ide4b1e8f28b116f094fd47012b8149d619cceb8f
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>