smb: do not map uid and gid
Summary:
libsmbc returns the uid/gid of the process, not of the file, the data
is entirely useless to us. do not list it.
currently there is no way to get the actual uid/gid of a dirent. internally
there seems to be tech available that uses the samba unix extension but
that doesn't have any public API.
in short: we can't determine ownership client-side
BUG: 212801
Test Plan: no longer shows current user as owner. in particular when that is not true!
Reviewers: ngraham
Reviewed By: ngraham
Subscribers: kde-frameworks-devel, kfm-devel
Tags: Dolphin, Frameworks
Differential Revision: https://phabricator.kde.org/D27293