[LYN-1731] Removed temporary bus for checking if the new viewport interaction model is enabled.

Code/Sandbox/Plugins/ComponentEntityEditorPlugin/SandboxIntegration.h

@@ -104,7 +104,6 @@ class SandboxIntegrationManager
     , private AzToolsFramework::EditorEntityContextNotificationBus::Handler
     , private AzToolsFramework::SliceEditorEntityOwnershipServiceNotificationBus::Handler
     , private IUndoManagerListener
-    , private AzToolsFramework::NewViewportInteractionModelEnabledRequestBus::Handler
     , private AzToolsFramework::Layers::EditorLayerComponentNotificationBus::Handler
 {
 public:
@@ -275,9 +274,6 @@ private:
     void SetDC(DisplayContext* dc) override;
     DisplayContext* GetDC() override;
 
-    // NewViewportInteractionModelEnabledRequestBus
-    bool IsNewViewportInteractionModelEnabled() override;
-
     // Context menu handlers.
     void ContextMenu_NewEntity();
     AZ::EntityId ContextMenu_NewLayer();