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)
diff --git a/bin/get-pick-list.sh b/bin/get-pick-list.sh
index 71d99b5..1bd0b36 100755
--- a/bin/get-pick-list.sh
+++ b/bin/get-pick-list.sh
@@ -17,7 +17,7 @@
 	sed -e 's/^[[:space:]]*(cherry picked from commit[[:space:]]*//' -e 's/)//' > already_picked
 
 # Grep for commits that were marked as a candidate for the stable tree.
-git log --reverse --pretty=%H -i --grep='^\([[:space:]]*NOTE: .*[Cc]andidate\|CC:.*mesa-stable\)' $latest_branchpoint..origin/master |\
+git log --reverse --pretty=%H -i --grep='^CC:.*mesa-stable' $latest_branchpoint..origin/master |\
 while read sha
 do
 	# Check to see whether the patch is on the ignore list.