Clean up old USE_* and RELEASE.md notes.

[ROCm/hip commit: 7912e61502]

projects/hip/src/hip_hcc.cpp

@@ -48,9 +48,6 @@ THE SOFTWARE.
 #include "env.h"
 
 
-// needs HCC change for hc::no_scope
-#define USE_NO_SCOPE 1
-
 //=================================================================================================
 //Global variables:
 //=================================================================================================