[calls] new-call-box: Remove unused GtkListStore

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit 1312b2624c40a2bdbfae2e8541ae86dc0dc25af5
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Sun Jul 18 12:47:24 2021 +0200

    new-call-box: Remove unused GtkListStore

 src/ui/new-call-box.ui | 8 --------
 1 file changed, 8 deletions(-)
---
diff --git a/src/ui/new-call-box.ui b/src/ui/new-call-box.ui
index df232615..4dd0a7fc 100644
--- a/src/ui/new-call-box.ui
+++ b/src/ui/new-call-box.ui
@@ -3,14 +3,6 @@
 <interface>
   <requires lib="gtk+" version="3.22"/>
   <requires lib="libhandy" version="1.0"/>
-  <object class="GtkListStore" id="origin_store">
-    <columns>
-      <!-- column-name name -->
-      <column type="gchararray"/>
-      <!-- column-name origin -->
-      <column type="GObject"/>
-    </columns>
-  </object>
   <template class="CallsNewCallBox" parent="GtkBox">
     <property name="can_focus">False</property>
     <property name="halign">center</property>