Remove usage of `furrr::future_pmap_raw()`

[DavisVaughan]

Hi, we are planning to remove all of the *_raw() functions from furrr to align with the fact that they are deprecated in purrr as of purrr 1.0.0 futureverse/furrr#298

It looks like crossmap is the only package using one of these:

crossmap/R/future_xmap.R

Line 118 in 9805f64

furrr::future_pmap_raw(

It looks like you could just move this function to the defunct stage, or go ahead and remove it entirely

And possibly go ahead and do the same thing with xmap_raw() to make our lives easier on the purrr side? That would be great too.

crossmap/R/xmap.R

Lines 119 to 122 in 9805f64

	xmap_raw <- function(.l, .f, ...) {
	lifecycle::deprecate_warn("0.4.0", "xmap_raw()", "xmap_vec()")
	purrr::pmap_raw(cross_list(.l), .f, ...)
	}

Thank you! We'll probably do a furrr release in around two weeks or so.

[rossellhayes]

Thanks for letting me know! These are removed in 50134c5. An updated version is on its way to CRAN.