Commit ea584a75 "move more api types for the client" deprecated
the `archive_type` function in favor of the associated function
`ArchiveType::from_path`.
Replace all remaining callers of the deprecated function with its
replacement.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
[WB: and remove the deprecated function]
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>