Remove conditional registration on tune version

[DavisVaughan]

workflows/R/zzz.R

Lines 10 to 23 in 84ae7af

	# Can't use `rlang::is_installed()` at all, as that doesn't work when
	# called from `.onLoad()` for some reason. Instead, rely on `packageVersion()`
	# erroring when the package isn't installed.
	has_at_least_version <- function(pkg, version) {
	tryCatch(
	expr = utils::packageVersion(pkg) >= version,
	error = function(cnd) FALSE
	)
	}
	if (has_at_least_version("tune", "0.1.3.9001")) {
	# `required_pkgs.workflow()` moved from tune to workflows
	vctrs::s3_register("generics::required_pkgs", "workflow", required_pkgs_workflow)
	}

Since many tune versions have gone by since then

[github-actions]

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