[vdi] Refactor texture/surface reference support.

Change-Id: I8014d82aae7139ef5f95e4b50c4fc6da200dbc9d

hipamd/tests/src/texture/hipBindTexRef1DFetch.cpp

@@ -32,9 +32,6 @@ THE SOFTWARE.
 
 #define N 512
 
-#if __HIP__
-__hip_pinned_shadow__
-#endif
 texture<float, 1, hipReadModeElementType> tex;
 
 __global__ void kernel(float *out) {