Remove hip-hcc codes: Part four

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

tests/src/hipHcc.cpp

@@ -48,15 +48,5 @@ int main(int argc, char* argv[]) {
     CHECK(hipGetDeviceProperties(&props, deviceId));
     printf("info: running on device #%d %s\n", deviceId, props.name);
 
-#ifdef __HCC__
-    hc::accelerator acc;
-    CHECK(hipHccGetAccelerator(deviceId, &acc));
-    std::wcout << "device_path=" << acc.get_device_path() << "\n";
-
-    hc::accelerator_view* av;
-    CHECK(hipHccGetAcceleratorView(0 /*nullStream*/, &av));
-#endif
-
-
     passed();
 };