Disable context menu share link

common/deployments/hub-staging.yaml

@@ -132,6 +132,15 @@ singleuser:
         {
           "@jupyterlab/apputils-extension:notification": {
             "fetchNews": "false"
+          },
+          "@jupyterlab/application-extension:context-menu": {
+            "contextMenu": [
+              {
+                "command": "filebrowser:share-main",
+                "selector": ".jp-DirListing-item[data-isdir]",
+                "disabled": true
+              }
+            ]
           }
         }