Index: src/poi.c
===================================================================
--- src/poi.c	(revision 5)
+++ src/poi.c	(revision 6)
@@ -980,12 +980,6 @@
             GTK_SELECTION_SINGLE);
     gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(tree_view), TRUE);
 
-    renderer = gtk_cell_renderer_text_new();
-    column = gtk_tree_view_column_new_with_attributes(
-            _("ID"), renderer, "text", CAT_ID, NULL);
-    gtk_tree_view_append_column(GTK_TREE_VIEW(tree_view), column);
-    gtk_tree_view_column_set_max_width (column, 1);
-
     renderer = gtk_cell_renderer_toggle_new();
     g_signal_connect (renderer, "toggled",
             G_CALLBACK (category_toggled), store);