message: Fix StreamExecutorMemoryAllocator comment, remove deprecated sentence.
diff: @@ -202,8 +202,6 @@ class DeviceMemoryAllocator {
  // Default memory allocator for a platform which uses
  // StreamExecutor::Allocate/Deallocate.
  -//
  -// Holds a mapping from device ordinals
  class StreamExecutorMemoryAllocator : public DeviceMemoryAllocator {
  public:
  // Create an allocator supporting a single device, corresponding to the passed
  