Make HIP_VDI the default

As this snippet shows, HCC is no longer supported by roctracer:

#if HIP_VDI
...
#else
#error HCC support dropped
#endif

Removed HIP_VDI from the CMakeLists.txt, and the source code.

Change-Id: Ib273da2a5af6d67fa1b021a7eca3ff785c8b9c73

test/MatrixTranspose_test/Makefile

@@ -17,7 +17,7 @@ TARGET=hcc
 
 EXECUTABLE=./MatrixTranspose
 OBJECTS = MatrixTranspose.o
-FLAGS =-g $(INC_PATH:%=-I%) -I$(ROCM_PATH)/hsa/include/hsa -I$(ROCM_PATH)/hsa/include -I$(ROCM_PATH)/hip/include -I$(ROCM_PATH)/include -DLOCAL_BUILD=1 -DHIP_VDI=${HIP_VDI} -DITERATIONS=$(ITERATIONS) -DAMD_INTERNAL_BUILD=1
+FLAGS =-g $(INC_PATH:%=-I%) -I$(ROCM_PATH)/hsa/include/hsa -I$(ROCM_PATH)/hsa/include -I$(ROCM_PATH)/hip/include -I$(ROCM_PATH)/include -DLOCAL_BUILD=1 -DITERATIONS=$(ITERATIONS) -DAMD_INTERNAL_BUILD=1
 
 ifeq ($(C_TEST), 1)
 	COMP=${CC}