DevTools: remove old Timeline front-end implementation

LayoutTests/http/tests/inspector/timeline-xhr-event-expected.txt

Index: LayoutTests/http/tests/inspector/timeline-xhr-event-expected.txt
diff --git a/LayoutTests/http/tests/inspector/timeline-xhr-event-expected.txt b/LayoutTests/http/tests/inspector/timeline-xhr-event-expected.txt
deleted file mode 100644
index 2a74b8b606c0950a58c3992ce6b877ba87b0c10c..0000000000000000000000000000000000000000
--- a/LayoutTests/http/tests/inspector/timeline-xhr-event-expected.txt
+++ /dev/null
@@ -1,56 +0,0 @@
-CONSOLE WARNING: The XMLHttpRequest progress event property 'totalSize' is deprecated. Please use 'total' instead.
-CONSOLE WARNING: The XMLHttpRequest progress event property 'position' is deprecated. Please use 'loaded' instead.
-Tests the Timeline events for XMLHttpReqeust
-
-XHRReadyStateChange Properties:
-{
-    children : <object>
-    data : {
-        readyState : 2
-        url : .../inspector/network/resources/resource.php
-    }
-    endTime : <number>
-    frameId : <string>
-    startTime : <number>
-    thread : <string>
-    type : "XHRReadyStateChange"
-}
-XHRReadyStateChange Properties:
-{
-    children : <object>
-    data : {
-        readyState : 3
-        url : .../inspector/network/resources/resource.php
-    }
-    endTime : <number>
-    frameId : <string>
-    startTime : <number>
-    thread : <string>
-    type : "XHRReadyStateChange"
-}
-XHRReadyStateChange Properties:
-{
-    children : <object>
-    data : {
-        readyState : 4
-        url : .../inspector/network/resources/resource.php
-    }
-    endTime : <number>
-    frameId : <string>
-    startTime : <number>
-    thread : <string>
-    type : "XHRReadyStateChange"
-}
-XHRLoad Properties:
-{
-    children : <object>
-    data : {
-        url : .../inspector/network/resources/resource.php
-    }
-    endTime : <number>
-    frameId : <string>
-    startTime : <number>
-    thread : <string>
-    type : "XHRLoad"
-}
-