Remove handling simultaneous moves in value iteration from call for contributions since it was added (to the python value iteration) a while back.
Remove handling simultaneous moves in value iteration from call for contributions since it was added (to the python value iteration) a while back.

PiperOrigin-RevId: 282998486
Change-Id: Ie1263c20ea4db9c3eb6e9d1c9e8a5ac10647a73e

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