Audit skip() with minimum_version requirements

[hfrick]

If we are past all the required versions on CRAN and RSPM, we don't really need those skip statements anymore, do we? Is there a case where it would install an older version and break again?

If we don't need the skip statements anymore, I suggest we remove them (even if they don't "hurt") so that we have one less thing to pay attention to when we look at the tests i.e. lowering the cognitive load 😄