Do not check output in doctest

[zundertj]

Will still verify that code does not error.

[ritchie46]

For context. The maintenance burden is quite high because when we change formatting of the tables we need to update the outputs. There is definitely value to checking the docs, but it would be great if we could overwrite the existing outputs with the expected ones like discussed here: Erotemic/xdoctest#69

For now its turned of until we improved float formatting and table size inference.