[meld/ui-next] preferences: Hide the overview map style preference

[Kai Willadsen <kaiw src gnome org>]

commit 6f828989c54b0c69217ffb35afade82dd103fe9c
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sat Apr 6 08:34:30 2019 +1000

    preferences: Hide the overview map style preference
    
    This is probably not the sort of preference I want to support long-term,
    since it's not *really* obvious why you'd pick one option over the
    others.

 meld/resources/ui/preferences.ui | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meld/resources/ui/preferences.ui b/meld/resources/ui/preferences.ui
index 3a03c2b7..a5acee7b 100644
--- a/meld/resources/ui/preferences.ui
+++ b/meld/resources/ui/preferences.ui
@@ -520,7 +520,7 @@
                             </child>
                             <child>
                               <object class="GtkHBox">
-                                <property name="visible">True</property>
+                                <property name="visible">False</property>
                                 <property name="can_focus">False</property>
                                 <property name="spacing">6</property>
                                 <child>