one more redundant ifdef around FFX headers

Author: pattakosn

runtime/Rendering/Renderer_Resources.cpp

@@ -36,9 +36,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "../RHI/RHI_DepthStencilState.h"
 #include "../RHI/RHI_Buffer.h"
 #include "../RHI/RHI_Device.h"
-#ifdef _MSC_VER
 #include "../RHI/RHI_AMD_FFX.h"
-#endif
 //========================================
 
 //= NAMESPACES ===============