[geary/mjog/mail-merge-plugin] Sidebar.Branch: Remove some harmless asserts

[Michael Gratton <mjog src gnome org>]

commit 5e02de22051075fae103eb69c6ba3aecffa8f00f
Author: Michael Gratton <mike vee net>
Date:   Fri Jul 17 17:58:06 2020 +1000

    Sidebar.Branch: Remove some harmless asserts

 src/client/sidebar/sidebar-branch.vala | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/src/client/sidebar/sidebar-branch.vala b/src/client/sidebar/sidebar-branch.vala
index d641a3000..934194fab 100644
--- a/src/client/sidebar/sidebar-branch.vala
+++ b/src/client/sidebar/sidebar-branch.vala
@@ -68,12 +68,9 @@ public class Sidebar.Branch : Geary.BaseObject {
                 children = new Gee.TreeSet<Node>(comparator_wrapper);
 
             bool added = children.add(child);
-            assert(added);
         }
 
         public void remove_child(Node child) {
-            assert(children != null);
-
             Gee.SortedSet<Node> new_children = new Gee.TreeSet<Node>(comparator_wrapper);
 
             // For similar reasons as in reorder_child(), can't rely on TreeSet to locate this