Remove dead code

shell/services/BarWidgetRegistry.qml

@@ -34,11 +34,6 @@ QtObject {
     changed()
   }
 
-  function componentFor(id) {
-    var entry = widgets[String(id)]
-    return entry ? entry.component : null
-  }
-
   function metadataFor(id) {
     var entry = widgets[String(id)]
     return entry ? entry.metadata : null

shell/services/PluginRegistry.qml

@@ -181,15 +181,6 @@ QtObject {
     pluginsChanged()
   }
 
-  function manifestsOfKind(kind) {
-    var result = []
-    for (var id in installedPlugins) {
-      var m = installedPlugins[id]
-      if (m && Array.isArray(m.kinds) && m.kinds.indexOf(kind) !== -1) result.push(m)
-    }
-    return result
-  }
-
   // ---------------------------------------------------------------- scanning
 
   // Output format produced by the rescan script: