Revert "Implement a Hit Test Cache for same point hits."

LayoutTests/fast/events/hit-test-cache-expected.txt

Index: LayoutTests/fast/events/hit-test-cache-expected.txt
diff --git a/LayoutTests/fast/events/hit-test-cache-expected.txt b/LayoutTests/fast/events/hit-test-cache-expected.txt
deleted file mode 100644
index a83da6a5f855c5083a86f18789481f332665b3e1..0000000000000000000000000000000000000000
--- a/LayoutTests/fast/events/hit-test-cache-expected.txt
+++ /dev/null
@@ -1,53 +0,0 @@
-Ensure hit test cache works in correct scenarios of scrolling, dom and style changes.
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-PASS successfullyParsed is true
-
-TEST COMPLETE
-PASS successfullyParsed is true
-
-TEST COMPLETE
-Hit test main div
----------------------
-PASS document.elementFromPoint(60,60) is internals.elementFromPointNoCache(document, 60, 60)
-PASS hitTestCountDelta() is 2
-PASS hitTestCacheHitsDelta() is 0
-PASS document.elementFromPoint(60,60) is internals.elementFromPointNoCache(document, 60, 60)
-PASS hitTestCountDelta() is 2
-PASS hitTestCacheHitsDelta() is 1
-
-Hit test fixed div after scroll
----------------------
-PASS document.elementFromPoint(12,12) is internals.elementFromPointNoCache(document, 12, 12)
-PASS hitTestCountDelta() is 2
-PASS hitTestCacheHitsDelta() is 0
-PASS document.elementFromPoint(10,60) is internals.elementFromPointNoCache(document, 10, 60)
-PASS hitTestCountDelta() is 2
-PASS hitTestCacheHitsDelta() is 0
-PASS document.elementFromPoint(12,12) is internals.elementFromPointNoCache(document, 12, 12)
-PASS hitTestCountDelta() is 2
-PASS hitTestCacheHitsDelta() is 0
-
-Hit test after style change
----------------------
-PASS document.elementFromPoint(12,12) is internals.elementFromPointNoCache(document, 12, 12)
-PASS hitTestCountDelta() is 2
-PASS hitTestCacheHitsDelta() is 0
-PASS document.elementFromPoint(12,12) is internals.elementFromPointNoCache(document, 12, 12)
-PASS hitTestCountDelta() is 2
-PASS hitTestCacheHitsDelta() is 0
-
-Hit test after dom manipulation
----------------------
-PASS document.elementFromPoint(12,12) is internals.elementFromPointNoCache(document, 12, 12)
-PASS hitTestCountDelta() is 2
-PASS hitTestCacheHitsDelta() is 0
-PASS document.elementFromPoint(12,12) is internals.elementFromPointNoCache(document, 12, 12)
-PASS hitTestCountDelta() is 2
-PASS hitTestCacheHitsDelta() is 0
-PASS successfullyParsed is true
-
-TEST COMPLETE
-