enable opencl-test again on all platforms

we have now a way to disable known bad OpenCL compilers based on vendor
name and driver version

sc/Module_sc.mk

@@ -59,7 +59,6 @@ $(eval $(call gb_Module_add_check_targets,sc,\
     CppunitTest_sc_ucalc \
     CppunitTest_sc_filters_test \
     CppunitTest_sc_rangelst_test \
-    $(if $(filter $(OS),MACOSX), \
 	CppunitTest_sc_opencl_test) \
 ))