Remove old Aura Gesture Detection Pipeline.

ui/events/BUILD.gn

Index: ui/events/BUILD.gn
diff --git a/ui/events/BUILD.gn b/ui/events/BUILD.gn
index 7948ad4b59e9e6197c872e8695c8b89ba18ca3d7..21981fd65a43cb2df9d63b9bdd438cf5fded36e0 100644
--- a/ui/events/BUILD.gn
+++ b/ui/events/BUILD.gn
@@ -108,16 +108,8 @@ component("events") {
     "event_utils.h",
     "events_export.h",
     "events_stub.cc",
-    "gestures/gesture_point.cc",
-    "gestures/gesture_point.h",
     "gestures/gesture_recognizer_impl_mac.cc",
-    "gestures/gesture_sequence.cc",
-    "gestures/gesture_sequence.h",
     "gestures/gesture_types.h",
-    "gestures/unified_gesture_detector_enabled.cc",
-    "gestures/unified_gesture_detector_enabled.h",
-    "gestures/velocity_calculator.cc",
-    "gestures/velocity_calculator.h",
     "win/events_win.cc",
     "x/events_x.cc",
   ]
@@ -270,7 +262,6 @@ test("events_unittests") {
     "event_processor_unittest.cc",
     "event_rewriter_unittest.cc",
     "event_unittest.cc",
-    "gestures/velocity_calculator_unittest.cc",
     "gesture_detection/bitset_32_unittest.cc",
     "gesture_detection/gesture_event_data_packet_unittest.cc",
     "gesture_detection/gesture_provider_unittest.cc",