This reverts part of the logic introduced in 207bf52c27 which
incorrectly gated untagged images behind the --all flag in non-expanded
view.
The original fix was addressing the wrong layer of the problem.
The actual issue was that dangling images were being incorrectly passed
to the tree code in the first place.
This was properly fixed in 67f5e3413 which corrected the dangling image
detection logic to properly filter them out before reaching the tree
display code.
Now that dangling images are correctly filtered upstream, untagged
images that reach the tree view should be displayed regardless of the
--all flag setting.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
0d88411f1b