=== ISSUE ===
If you open the lunch module with the Kanban view activated, there is
a border at the bottom of the view, which was previously used to create
a separation between two elements of different colors.
Since Milk brings a fresh new design, this border was removed on other
kanbans but not this one which makes it not consistent.
=== AFTER ===
We remove that `border-bottom` class to make the view consistent with
other kanbans.
task-3328235
part of task-3326263
closesodoo/odoo#123946
X-original-commit: 4e4846ac9c78ce6775baebf1a073bdc67164b6bb
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>