Ensure package removal list does not contain duplicates

Noticed with the openoffice/libreoffice replacement scheme where many
packages are listed as replacements to one package, thus electing it for
removal multiple times. Ensure a given package is not already present
before placing it in the removal list.

Signed-off-by: Dan McGee <dan@archlinux.org>

0 files changed, 0 insertions, 0 deletions