Cleanup the include files

Use #include "header" instead of #include <header> so that the header
files are found when the application #includes <roctracer/roctracer.h>
with -I /opt/rocm/include.

Change-Id: I24feac9a5030d3600aee98084340e246c3990db5

test/app/codeobj_test.cpp

@@ -22,8 +22,8 @@
 #include <cstdio>
 #include <cstdlib>
 
-#include "inc/roctracer.h"
-#include "inc/roctracer_hsa.h"
+#include "roctracer.h"
+#include "roctracer_hsa.h"
 
 namespace {
 // Check returned HSA API status
@@ -66,4 +66,4 @@ ROCTRACER_EXPORT void OnUnload() {
   CHECK(roctracer_disable_domain_callback(ACTIVITY_DOMAIN_HSA_EVT));
 }
 
-}  // extern "C"
+}  // extern "C"