HIPCommander code cleanup (#1207)

* HIPCommander code cleanup

* Removed non-used headerfiles

* Removed empty ifdef

samples/1_Utils/hipCommander/c.cmd

@@ -1,3 +1,3 @@
-loop,1000; H2D; NullKernel; D2H; endloop;
+loop(1000); H2D; NullKernel; D2H; endloop;
 streamsync;
-printTiming, 1000
+printTiming(1000)