OrdersVM: Remove incorrect comment

We might not be able to do this fully because we need to detect if the view
is visible or not. And we can't do that in the `ViewModel`.

Author: shiki

WooCommerce/Classes/ViewRelated/Orders/OrdersViewModel.swift

@@ -28,9 +28,6 @@ final class OrdersViewModel {
 
     /// The block called if self requests a resynchronization of the first page.
     ///
-    /// In the future, if the `SyncCoordinator` should be managed by this `ViewModel`, then we
-    /// wouldn't need this block at all.
-    ///
     var onShouldResynchronizeAfterAppActivation: (() -> ())?
 
     /// OrderStatus that must be matched by retrieved orders.