remove some unnecessary api_version args

[MarcoGorelli]

These are unnessary, as the namespace will already have been instantiated to follow a given api version

e.g.

df, xp = df.__dataframe_consortium_standard__(api_version='2023.09-beta')
# xp is already the 2023.09-beta API version
# so xp.dataframe_from_dict returns a dataframe compliant with the 2023.09-beta version

[MarcoGorelli]

approved on today's call