[vdi] Refactor texture/surface reference support.

Change-Id: I8014d82aae7139ef5f95e4b50c4fc6da200dbc9d

tests/src/texture/simpleTexture3D.cpp

@@ -31,19 +31,10 @@ THE SOFTWARE.
 const char *sampleName = "simpleTexture3D";
 
 // Texture reference for 3D texture
-#if __HIP__
-__hip_pinned_shadow__
-#endif
 texture<float, hipTextureType3D, hipReadModeElementType> texf;
 
-#if __HIP__
-__hip_pinned_shadow__
-#endif
 texture<int, hipTextureType3D, hipReadModeElementType> texi;
 
-#if __HIP__
-__hip_pinned_shadow__
-#endif
 texture<char, hipTextureType3D, hipReadModeElementType> texc;
 
 template <typename T>