Queue custom element attribute reactions for no-op sets, removes

third_party/WebKit/LayoutTests/imported/wpt/custom-elements/reactions/DOMStringMap-expected.txt

Index: third_party/WebKit/LayoutTests/imported/wpt/custom-elements/reactions/DOMStringMap-expected.txt
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/custom-elements/reactions/DOMStringMap-expected.txt b/third_party/WebKit/LayoutTests/imported/wpt/custom-elements/reactions/DOMStringMap-expected.txt
deleted file mode 100644
index 4ccc2a61af283bccdaa3d56e29a7ab13c7daa6bb..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/imported/wpt/custom-elements/reactions/DOMStringMap-expected.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-This is a testharness.js-based test.
-PASS setter on DOMStringMap must enqueue an attributeChanged reaction when adding an observed data attribute 
-PASS setter on DOMStringMap must not enqueue an attributeChanged reaction when adding an unobserved data attribute 
-PASS setter on DOMStringMap must enqueue an attributeChanged reaction when mutating the value of an observed data attribute 
-FAIL setter on DOMStringMap must enqueue an attributeChanged reaction when mutating the value of an observed data attribute to the same value assert_array_equals: lengths differ, expected 1 got 0
-PASS setter on DOMStringMap must not enqueue an attributeChanged reaction when mutating the value of an unobserved data attribute 
-PASS deleter on DOMStringMap must enqueue an attributeChanged reaction when removing an observed data attribute 
-PASS deleter on DOMStringMap must not enqueue an attributeChanged reaction when removing an unobserved data attribute 
-PASS deleter on DOMStringMap must not enqueue an attributeChanged reaction when it does not remove a data attribute 
-Harness: the test ran to completion.
-