message: remove unused cpu allocator factory
diff: @@ -117,16 +117,6 @@ class CPUAllocator : public Allocator {
  TF_DISALLOW_COPY_AND_ASSIGN(CPUAllocator);
  };
  -namespace {
  -Allocator* MakeCpuAllocator() {
  - Allocator* allocator = new CPUAllocator;
  - if (cpu_allocator_collect_full_stats || LogMemory::IsEnabled()) {
  - allocator = new TrackingAllocator(allocator, true);
  - }
  - return allocator;
  -}
  -} // namespace
  -
  Allocator* cpu_allocator() {
  static Allocator* cpu_alloc = AllocatorRegistry::Global()->GetAllocator();
  if (cpu_allocator_collect_full_stats && !cpu_alloc->TracksAllocationSizes()) {
  