virSecurityDACSetOwnershipInternal: Drop dead code

virSecurityDACSetOwnershipInternal: Drop dead code

The virSecurityDACSetOwnershipInternal() function accepts two
arguments (among others): @path and @src. The idea being that in
some cases @path is NULL and @src is not and then @path is filled
from @src->path. However, this is done in both callers already
(because of seclabel remembering/recall). Therefore, this code in
virSecurityDACSetOwnershipInternal() is dead, effectively.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>