Remove unnecessary header include of missing dependency.
Remove unnecessary header include of missing dependency.

PiperOrigin-RevId: 382487884
Change-Id: I9d88bc0b4b27381de355ba1edf6517499a0854be

deepmind/open_spiel,deepmind/open_spiel,deepmind/open_spiel,deepmind/open_spiel,deepmind/open_spiel,deepmind/open_spiel