Remove duplicate service worker test

third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/onactivate-throw-error-worker.js

Index: third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/onactivate-throw-error-worker.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/onactivate-throw-error-worker.js b/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/onactivate-throw-error-worker.js
deleted file mode 100644
index 1e88ac5c4e7852b4752de3af210566d010b62a86..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/onactivate-throw-error-worker.js
+++ /dev/null
@@ -1,7 +0,0 @@
-// Ensure we can handle multiple activate handlers. One handler throwing an
-// error should cause the event dispatch to be treated as having unhandled
-// errors.
-self.addEventListener('activate', function(event) {});
-self.addEventListener('activate', function(event) {});
-self.addEventListener('activate', function(event) { throw new Error(); });
-self.addEventListener('activate', function(event) {});