Remove unused definitions in CMakeLists.txt (#1302)
Remove unused definitions in CMakeLists.txt (#1302)

Signed-off-by: Kévin Petit <7be082ac62c87f3fb90b426eef925ff08291362b@free.fr>
KhronosGroup/OpenCL-CTS,KhronosGroup/OpenCL-CTS,KhronosGroup/OpenCL-CTS,KhronosGroup/OpenCL-CTS