feat(ExportControlNode): Connect Export Control Node popup to backend

Connect `onDeletePrivateKey` to backend.
Depends on https://github.com/status-im/status-desktop/pull/11640

ui/app/AppLayouts/Chat/stores/RootStore.qml

@@ -620,6 +620,10 @@ QtObject {
         chatCommunitySectionModule.authenticateWithCallback()
     }
 
+    function removePrivateKey(communityId) {
+        root.communitiesModuleInst.removePrivateKey(communityId)
+    }
+
     readonly property Connections communitiesModuleConnections: Connections {
       target: communitiesModuleInst
       function onImportingCommunityStateChanged(communityId, state, errorMsg) {

ui/app/AppLayouts/Communities/views/CommunitySettingsView.qml

@@ -214,11 +214,9 @@ StatusSectionLayout {
                         return
 
                     Global.openExportControlNodePopup(root.community.name, root.chatCommunitySectionModule.exportCommunity(root.community.id), (popup) => {
-                        //TODO: connect to backend
-                        // Delete private key and remove control node status
                         popup.onDeletePrivateKey.connect(() => {
-                            console.log("Delete private key")
-                        })
+                            root.rootStore.removePrivateKey(root.community.id)
+                        })  
                     })
                 })
             }