Remove explicit address spaces declarations

src/device_util.cpp

@@ -35,8 +35,8 @@ THE SOFTWARE.
  This is the best place to put them because the device
  global variables need to be initialized at the start.
 */
-__device__ ADDRESS_SPACE_1 char gpuHeap[SIZE_OF_HEAP];
-__device__ ADDRESS_SPACE_1 uint32_t gpuFlags[NUM_PAGES];
+__device__ char gpuHeap[SIZE_OF_HEAP];
+__device__ uint32_t gpuFlags[NUM_PAGES];
 
 __device__ void *__hip_hc_malloc(size_t size)
 {