Move .censoring weights graf.workflow

[EmilHvitfeldt]

to close #968

Paired {workflows} PR: tidymodels/workflows#213

There are 4 possible scenarios:

.censoring_weights_graf.workflow() is exported from only {parsnip}

This is fine!

Happens if parsnip < 1.1.1.9007 and workflows < 1.1.3.9001, which is another way of saying that both packages are installed before Dec 12.

.censoring_weights_graf.workflow() is exported from only {workflows}

This is fine!

Happens if parsnip >= 1.1.1.9007 and workflows >= 1.1.3.9001, which is another way of saying that both packages are installed after Dec 12 (or whenever the PRs are merged in.

.censoring_weights_graf.workflow() is exported from both {parsnip} and {workflows}

This is not good.

Would need parsnip < 1.1.1.9007 and workflows >= 1.1.3.9001. Which can't happen as workflows 1.1.3.9001 requires parsnip >= 1.1.1.9007. So we are good here.

##.censoring_weights_graf.workflow() isn't exported

Would happen if parsnip >= 1.1.1.9007 and workflow < 1.1.3.9001. Which could happen. I can't recall if there is a way for us to deal with this last point

[hfrick]

Looks good! We have previously done a more complicated approach with conditionally registering the moved method but since this method has not gone to CRAN yet, I think the approach via requiring a fixed version of parsnip is sufficient here.

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