[SYCL][USM] Remove vestigial dead code (#1474)

Signed-off-by: James Brodman <[email protected]>

Author: jbrodman

sycl/source/CMakeLists.txt

@@ -105,8 +105,6 @@ set(SYCL_SOURCES
     "detail/scheduler/graph_builder.cpp"
     "detail/spec_constant_impl.cpp"
     "detail/sycl_mem_obj_t.cpp"
-    "detail/usm/clusm.cpp"
-    "detail/usm/usm_dispatch.cpp"
     "detail/usm/usm_impl.cpp"
     "detail/util.cpp"
     "accessor.cpp"

sycl/source/detail/context_impl.hpp

@@ -17,7 +17,6 @@
 #include <detail/kernel_program_cache.hpp>
 #include <detail/platform_impl.hpp>
 #include <detail/program_manager/program_manager.hpp>
-#include <detail/usm/usm_dispatch.hpp>
 
 #include <map>
 #include <memory>
@@ -152,7 +151,6 @@ class context_impl {
   bool MPluginInterop;
   bool MHostContext;
   bool MUseCUDAPrimaryContext;
-  std::shared_ptr<usm::USMDispatcher> MUSMDispatch;
   std::map<DeviceLibExt, RT::PiProgram> MCachedLibPrograms;
   mutable KernelProgramCache MKernelProgramCache;
 };

sycl/source/detail/memory_manager.cpp

@@ -10,7 +10,6 @@
 #include <detail/context_impl.hpp>
 #include <detail/event_impl.hpp>
 #include <detail/queue_impl.hpp>
-#include <detail/usm/usm_dispatch.hpp>
 
 #include <algorithm>
 #include <cassert>

sycl/source/detail/queue_impl.cpp

@@ -12,7 +12,6 @@
 #include <CL/sycl/detail/pi.hpp>
 #include <CL/sycl/device.hpp>
 #include <detail/queue_impl.hpp>
-#include <detail/usm/usm_dispatch.hpp>
 
 #include <cstring>