MAINT: Make einsum optimize default to False. #11720
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False is the documented value and the value used in 1.14, but 1.15.0 was turning optimization on when there were more than two arguments, resulting in slowdowns for small matrices. This choice can be revisited as the einsum optimization code matures. Closes numpy#11714.
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False is the documented value and the value used in 1.14, but 1.15.0 was
turning optimization on when there were more than two arguments,
resulting in slowdowns for small matrices. This choice can be revisited
as the einsum optimization code matures.
Closes #11714.