This change removes redundant calls to the Proton Drive Bridge when
creating Objects. Specifically, the function List() would get a
directory listing, get a link for each file, construct a remote path
from that link, then get a link for that remote path again by calling
getObjectLink() unnecessarily. This change removes that unnecessary
call, and tidies up a couple of functions around this with unused
parameters.
Related to performance issues reported in #7322 and #7413
