Drop now obsolete patch

0001-touchpad-only-use-the-last-two-coordinates-for-delta.patch

@@ -1,62 +0,0 @@
-From e288c3045d0c582ee19e85cbe11529dc374d4bbf Mon Sep 17 00:00:00 2001
-From: Peter Hutterer <peter.hutterer@who-t.net>
-Date: Mon, 21 Nov 2016 08:39:47 +1000
-Subject: [PATCH libinput] touchpad: only use the last two coordinates for
- delta calculation
-
-Taking the last 4 points means factoring in a coordinate that may be more than
-40ms in the past - or even more when the finger moves slowly and we don't get
-events for a while. This makes the pointer more sluggish and slower to catch up
-with what the finger is actually doing.
-
-We already have the motion hysteresis as a separate item to prevent jumps (and
-thus adds some delay to the movement), the calculation over time doesn't
-provide enough benefit to justify the sluggish pointer.
-
-Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
----
- src/evdev-mt-touchpad.c | 20 +++++---------------
- 1 file changed, 5 insertions(+), 15 deletions(-)
-
-diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c
-index d72cb19..7b8514c 100644
---- a/src/evdev-mt-touchpad.c
-+++ b/src/evdev-mt-touchpad.c
-@@ -262,29 +262,19 @@ tp_end_sequence(struct tp_dispatch *tp, struct tp_touch *t, uint64_t time)
- 	tp_end_touch(tp, t, time);
- }
- 
--static double
--tp_estimate_delta(int x0, int x1, int x2, int x3)
--{
--	return (x0 + x1 - x2 - x3) / 4.0;
--}
--
- struct normalized_coords
- tp_get_delta(struct tp_touch *t)
- {
- 	struct device_float_coords delta;
- 	const struct normalized_coords zero = { 0.0, 0.0 };
- 
--	if (t->history.count < TOUCHPAD_MIN_SAMPLES)
-+	if (t->history.count <= 1)
- 		return zero;
- 
--	delta.x = tp_estimate_delta(tp_motion_history_offset(t, 0)->x,
--				    tp_motion_history_offset(t, 1)->x,
--				    tp_motion_history_offset(t, 2)->x,
--				    tp_motion_history_offset(t, 3)->x);
--	delta.y = tp_estimate_delta(tp_motion_history_offset(t, 0)->y,
--				    tp_motion_history_offset(t, 1)->y,
--				    tp_motion_history_offset(t, 2)->y,
--				    tp_motion_history_offset(t, 3)->y);
-+	delta.x = tp_motion_history_offset(t, 0)->x -
-+		  tp_motion_history_offset(t, 1)->x;
-+	delta.y = tp_motion_history_offset(t, 0)->y -
-+		  tp_motion_history_offset(t, 1)->y;
- 
- 	return tp_normalize_delta(t->tp, delta);
- }
--- 
-2.9.3
-