SOCL: do not override user environment

socl/src/init.c

@@ -28,9 +28,6 @@ __attribute__((constructor)) static void socl_init() {
   struct starpu_conf conf;
   starpu_conf_init(&conf);
   conf.ncuda = 0;
-  putenv("STARPU_NCUDA=0");
-  putenv("STARPU_NOPENCL=1");
-  putenv("STARPU_NCPUS=1");
 
   mem_object_init();