bin/get-pick-list.sh: fix the oneline printing

"--summary" will also print extended header information such as
creations, renames and mode changes.

Let's just use "--no-patch", which suppresses the diff output.

v2: Use "--no-patch" instead of the "-s" abbreviation (Eric).

Fixes: 559c32d2 ("bin/get-pick-list.sh: simplify git oneline printing")
Cc: Juan A. Suarez <jasuarez@igalia.com>
Cc: Eric Engestrom <eric.engestrom@intel.com>
Cc: Dylan Baker <dylan@pnwbakers.com>
Cc: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Juan A. Suarez <jasuarez@igalia.com>
(cherry picked from commit 716ed41a)