daemonset.go was entirely dead: CreateDaemonSet, DeleteDaemonset, AddRookVersionLabelToDaemonSet, and GetDaemonsets had no callers anywhere in the repo (verified with grep, deadcode, and staticcheck). Rook does not manage any DaemonSets via these helpers. Remove the file. Signed-off-by: Joshua Hoblitt <josh@hoblitt.com>