[geary/mjog/493-undo-send: 6/6] Remove unused method

[Michael Gratton <mjog src gnome org>]

commit a10441653caeb0e90adb94a5593047fb86009168
Author: Michael Gratton <mike vee net>
Date:   Thu Nov 14 12:29:35 2019 +1100

    Remove unused method

 src/client/application/application-controller.vala | 9 ---------
 1 file changed, 9 deletions(-)
---
diff --git a/src/client/application/application-controller.vala 
b/src/client/application/application-controller.vala
index 8d1d7483..e6a6b3ef 100644
--- a/src/client/application/application-controller.vala
+++ b/src/client/application/application-controller.vala
@@ -1728,15 +1728,6 @@ public class Application.Controller : Geary.BaseObject {
         }
     }
 
-    // Returns a list of composer windows for an account, or null if none.
-    public Gee.List<Composer.Widget>? get_composer_widgets_for_account(Geary.AccountInformation account) {
-        Gee.LinkedList<Composer.Widget> ret = Geary.traverse<Composer.Widget>(composer_widgets)
-            .filter(w => w.account.information == account)
-            .to_linked_list();
-
-        return ret.size >= 1 ? ret : null;
-    }
-
     private Geary.AccountInformation? get_first_account() {
         return this.accounts.keys.iterator().fold<Geary.AccountInformation?>(
             (next, prev) => {