remove dead code for TBB samples.

Author: root

Libraries/oneTBB/tbb-async-sycl/src/tbb-async-sycl.cpp

@@ -20,10 +20,6 @@
 // e.g., $ONEAPI_ROOT/dev-utilities//include/dpc_common.hpp
 #include "dpc_common.hpp"
 
-constexpr sycl::access::mode sycl_read = sycl::access::mode::read;
-constexpr sycl::access::mode sycl_write = sycl::access::mode::write;
-constexpr sycl::access::mode sycl_read_write = sycl::access::mode::read_write;
-
 struct done_tag{};
 
 const float ratio = 0.5;  // CPU to GPU offload ratio

Libraries/oneTBB/tbb-task-sycl/src/tbb-task-sycl.cpp

@@ -17,10 +17,6 @@
 // e.g., $ONEAPI_ROOT/dev-utilities//include/dpc_common.hpp
 #include "dpc_common.hpp"
 
-constexpr sycl::access::mode sycl_read = sycl::access::mode::read;
-constexpr sycl::access::mode sycl_write = sycl::access::mode::write;
-constexpr sycl::access::mode sycl_read_write = sycl::access::mode::read_write;
-
 #define VERBOSE
 
 const float alpha = 0.5;  // coeff for triad calculation