Bug 1554870 [wpt PR 17041] - Remove the test that checks that pointer events and compatibility mouse events have the same timestamp, a=testonly

Automatic update from web-platform-tests
Remove the test that checks that pointer events and compatibility mouse events have the same timestamp. There is no requirement by the specification to do this as per the discussion in w3c/pointerevents#284. This addresses web-platform-tests/wpt#17016. (#17041)

--

wp5At-commits: b89470bffd7c2fea14d7822fc18862cf5d8b57b4
wpt-pr: 17041

UltraBlame original commit: 48ef3551127afc3366932e147ead62fe9aeb5a6a

Author: marco-c

testing/web-platform/tests/pointerevents/pointerevent_suppress_compat_events_on_drag_mouse.html

@@ -46,7 +46,6 @@
           var target_list = ["target0", "target1"];
           var pointer_event_list = ["pointerdown" , "pointermove", "pointerup"];
           var mouse_event_list = ["mousedown", "mouseup", "mousemove"];
-          var last_pointer_event = null;
 
           target_list.forEach(function(targetId) {
               var target = document.getElementById(targetId);
@@ -64,8 +63,6 @@
 
                       if (label === "pointerdown@target0")
                           event.preventDefault();
-
-                      last_pointer_event = event;
                   });
               });
 
@@ -77,11 +74,6 @@
                       event_log.push(event.type + "@" + targetId);
 
                       include_next_mousemove = (event.type == "mousedown");
-                      test(function() {
-                          test(function () {
-                              assert_equals(event.timeStamp, last_pointer_event.timeStamp, "The time stamp of the compat mouse event should be the same as its pointerevent");
-                          });
-                      }, event.type + "'s time stamp should be the same as " + last_pointer_event.type + "'s time stamp.");
                   });
               });
           });