remove duplicate key

(cherry picked from commit 262723b)

Author: saschaszott

src/assets/i18n/en.json5

@@ -5662,8 +5662,6 @@
 
   "supervision.search.results.head": "Workflow and Workspace tasks",
 
-  "orgunit.search.results.head": "Organizational Unit Search Results",
-
   "workflow-item.edit.breadcrumbs": "Edit workflowitem",
 
   "workflow-item.edit.title": "Edit workflowitem",