Remove outdated EditorModel Notifications documentation and associated images

Author: Luuk Peters

16/umbraco-cms/.gitbook.yaml

@@ -17,7 +17,6 @@ redirects:
     customizing/foundation/working-with-data/repositories: customizing/foundation/repositories.md
     customizing/foundation/working-with-data/states: customizing/foundation/states.md
     customizing/foundation/working-with-data/store: customizing/foundation/README.md
-    reference/notifications/editormodel-notifications/customizing-the-links-box: reference/notifications/editormodel-notifications/README.md
     fundamentals/backoffice/property-editors/built-in-umbraco-property-editors/rich-text-editor/blocks: fundamentals/backoffice/property-editors/built-in-umbraco-property-editors/rich-text-editor/README.md
     tutorials/creating-a-custom-dashboard: tutorials/creating-a-custom-dashboard/README.md
     extending/property-editors/declaring-your-property-editor: tutorials/creating-a-property-editor/README.md

16/umbraco-cms/SUMMARY.md

@@ -373,7 +373,6 @@
   * [MediaService Notifications Example](reference/notifications/mediaservice-notifications.md)
   * [MemberService Notifications Example](reference/notifications/memberservice-notifications.md)
   * [Umbraco Application Lifetime Notifications](reference/notifications/umbracoapplicationlifetime-notifications.md)
-  * [EditorModel Notifications](reference/notifications/editormodel-notifications/README.md)
   * [Hot vs. cold restarts](reference/notifications/hot-vs-cold-restarts.md)
 * [Inversion of Control / Dependency injection](reference/using-ioc.md)
 * [Management](reference/management/README.md)