DevTools: Remove editor in drawer experiment

Source/devtools/front_end/sources/module.json

 {
     "extensions": [
         {
             "type": "@WebInspector.Panel",
             "name": "sources",
             "title": "Sources",
             "order": 2,
             "className": "WebInspector.SourcesPanel"
         },
         {
@@ skipping 33 matching lines @@
                     "platform": "mac",
                     "shortcut": "Meta+Alt+F"
                 },
                 {
                     "platform": "windows,linux",
                     "shortcut": "Ctrl+Shift+F"
                 }
             ]
         },
         {
-            "type": "@WebInspector.DrawerEditor",
-            "className": "WebInspector.SourcesPanel.DrawerEditor"
-        },
-        {
             "type": "@WebInspector.Revealer",
             "contextTypes": ["WebInspector.UILocation"],
             "className": "WebInspector.SourcesPanel.UILocationRevealer"
         },
         {
             "type": "@WebInspector.Revealer",
             "contextTypes": ["WebInspector.UISourceCode"],
             "className": "WebInspector.SourcesPanel.UISourceCodeRevealer"
         },
         {
@@ skipping 110 matching lines @@
             "type": "ui-setting",
             "title": "Auto-reload generated CSS",
             "parentSettingName": "cssSourceMapsEnabled",
             "settingName": "cssReloadEnabled",
             "settingType": "checkbox"
         }
     ],
     "dependencies": [ "source_frame" ],
     "scripts": [ "SourcesPanel.js" ]
 }