DevTools: remove old Timeline front-end implementation

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

Index: LayoutTests/http/tests/inspector/websocket/timeline-websocket-event-expected.txt
diff --git a/LayoutTests/http/tests/inspector/websocket/timeline-websocket-event-expected.txt b/LayoutTests/http/tests/inspector/websocket/timeline-websocket-event-expected.txt
deleted file mode 100644
index bfde461e546fa57cd108f77417013f3b69142bc9..0000000000000000000000000000000000000000
--- a/LayoutTests/http/tests/inspector/websocket/timeline-websocket-event-expected.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-CONSOLE WARNING: 'WebSocket.URL' is deprecated. Please use 'WebSocket.url' instead.
-Tests the Timeline events for WebSocket
-
-WebSocketCreate Properties:
-{
-    data : {
-        identifier : <number>
-        url : ws://127.0.0.1:8880/simple
-    }
-    endTime : <number>
-    frameId : <string>
-    stackTrace : <object>
-    startTime : <number>
-    thread : <string>
-    type : "WebSocketCreate"
-}
-WebSocketSendHandshakeRequest Properties:
-{
-    data : {
-        identifier : <number>
-    }
-    endTime : <number>
-    frameId : <string>
-    startTime : <number>
-    thread : <string>
-    type : "WebSocketSendHandshakeRequest"
-}
-WebSocketReceiveHandshakeResponse Properties:
-{
-    data : {
-        identifier : <number>
-    }
-    endTime : <number>
-    frameId : <string>
-    startTime : <number>
-    thread : <string>
-    type : "WebSocketReceiveHandshakeResponse"
-}
-WebSocketDestroy Properties:
-{
-    data : {
-        identifier : <number>
-    }
-    endTime : <number>
-    frameId : <string>
-    startTime : <number>
-    thread : <string>
-    type : "WebSocketDestroy"
-}
-