Update AzureActiveDirectorySignins.json

Workbooks/AzureActiveDirectorySignins.json

@@ -1371,9 +1371,6 @@
       "name": "query - 7 - Copy"
     }
   ],
-  "fallbackResourceIds": [
-    "/subscriptions/d1d8779d-38d7-4f06-91db-9cbc8de0176f/resourcegroups/soc/providers/microsoft.operationalinsights/workspaces/cybersecuritysoc"
-  ],
   "fromTemplateId": "sentinel-AzureActiveDirectorySigninLogs",
   "$schema": "https://github.com/Microsoft/Application-Insights-Workbooks/blob/master/schema/workbook.json"
 }