Remove shallowCopy(), which shouldn't be saving us time any more
Remove shallowCopy(), which shouldn't be saving us time any more

Remove shallowCopy(), which shouldn't be saving us time any more since
containers/image's storage transport's HasBlob() implementation was last
updated.

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

Closes: #508
Approved by: rhatdan

TomSweeneyRedHat/buildah,TomSweeneyRedHat/buildah,rhatdan/buildah,nalind/buildah-1,nalind/buildah,rhatdan/buildah,rhatdan/buildah,nalind/buildah-1,nalind/buildah-1,nalind/buildah,ipbabble/buildah,ipbabble/buildah,projectatomic/buildah,projectatomic/buildah,projectatomic/buildah,TomSweeneyRedHat/buildah