[dtests] refactor windows specific changes (#1313)

* [dtests] refactor windows specific changes

* Refactor hipMemoryAllocateCoherentDriver - PR- 1309

* Fix missing z in _putenv_s

* Revert "Fix missing z in _putenv_s"

This reverts commit 099a1b20a5c75c5f122d57c0ad2bca01745cdc9c.

* Refactor changes from PR 1299

* Update hipEnvVarDriver.cpp


[ROCm/clr commit: c741ad3c80]

projects/clr/hipamd/tests/src/runtimeApi/memory/hipMemcpy_simple.cpp

@@ -29,9 +29,6 @@ THE SOFTWARE.
 
 #include "hip/hip_runtime.h"
 #include "test_common.h"
-#ifdef _WIN64
-#define aligned_alloc _aligned_malloc
-#endif
 
 bool p_async = false;
 

projects/clr/hipamd/tests/src/runtimeApi/memory/hipMemoryAllocateCoherentDriver.cpp

@@ -29,12 +29,7 @@ OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWA
 #include <assert.h>
 #include <string>
 #include "hip/hip_runtime.h"
-
-#ifdef _WIN64
-#define popen(x,y) _popen(x,y)
-#define pclose(x) _pclose(x)
-#define setenv(x,y,z) _putenv_s(x,y)
-#endif
+#include "test_common.h"
 
 using namespace std;