bin/get-pick-list.sh: remove ancient way of nominating patches

The old way of nominating patches [NOTE: .*[Cc]andidate] was
deprecated and has been unused for approx. 3 years.

Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
(cherry picked from commit f1b0b75099c7bdcc1a96ffcf9505e255ab57ee4c)
1 file changed