b34dd95124
Remove __HCC__, __HCC_ONLY__, __HCC_CPP__, __HCC_C__, __HCC_OR_HIP_CLANG__, __HIP_ROCclr__ and their guarded codes. Remove Hcc codes from directed_tests and samples. Remove __HIP_PLATFORM_HCC__ and __HIP_PLATFORM_NVCC__ from some files where they are not necessary. Add deprecation notice. Change-Id: I1ae467eafd749d6c25bca204c1724b026be21fce