[vdi] Refactor texture/surface reference support.

Change-Id: I8014d82aae7139ef5f95e4b50c4fc6da200dbc9d

tests/src/texture/hipTextureRef2D.cpp

@@ -9,9 +9,7 @@
 
 #include <hip/hip_runtime.h>
 #include "test_common.h"
-#if __HIP__
-__hip_pinned_shadow__
-#endif
+
 texture<float, 2, hipReadModeElementType> tex;
 
 __global__ void tex2DKernel(float* outputData,