Remove some of timeline experiments

Source/devtools/front_end/common/Settings.js

Index: Source/devtools/front_end/common/Settings.js
diff --git a/Source/devtools/front_end/common/Settings.js b/Source/devtools/front_end/common/Settings.js
index a2d8f9a508c8be301a2fa61e28fe047dc089de4b..def7436396cd57c19686c156b960fecc7434512f 100644
--- a/Source/devtools/front_end/common/Settings.js
+++ b/Source/devtools/front_end/common/Settings.js
@@ -298,10 +298,8 @@ WebInspector.ExperimentsSettings = function(experimentsEnabled)
     this.gpuTimeline = this._createExperiment("gpuTimeline", "GPU data on timeline", true);
     this.heapSnapshotStatistics = this._createExperiment("heapSnapshotStatistics", "Heap snapshot statistics", true);
     this.layersPanel = this._createExperiment("layersPanel", "Layers panel", true);
-    this.timelineFlameChart = this._createExperiment("timelineFlameChart", "Timeline flame chart");
     this.timelineOnTraceEvents = this._createExperiment("timelineOnTraceEvents", "Timeline on trace events", true);
     this.timelinePowerProfiler = this._createExperiment("timelinePowerProfiler", "Timeline power profiler");
-    this.timelineTracingMode = this._createExperiment("timelineTracingMode", "Timeline tracing mode");
     this.timelineJSCPUProfile = this._createExperiment("timelineJSCPUProfile", "Timeline with JS sampling");
     this.timelineNoLiveUpdate = this._createExperiment("timelineNoLiveUpdate", "Timeline w/o live update", true);
     this.workersInMainWindow = this._createExperiment("workersInMainWindow", "Workers in main window", true);