[gnome-font-viewer] font-view: don't explicitly load RTL icons

[Cosimo Cecchi <cosimoc src gnome org>]

commit a1bffb51ef3d9ba1017cc1a02563df5b672bcba7
Author: Cosimo Cecchi <cosimo endlessm com>
Date:   Fri Sep 2 09:53:53 2016 -0700

    font-view: don't explicitly load RTL icons
    
    GTK does it for us these days. Bump minimum version to 3.20 as well.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=770748

 configure.ac    |    2 +-
 src/font-view.c |    5 +----
 2 files changed, 2 insertions(+), 5 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1d4d79c..26b322f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,7 +34,7 @@ AC_CACHE_SAVE
 GLIB_GSETTINGS
 
 GLIB_MIN_VERSION=2.35.1
-GTK_MIN_VERSION=3.11.4
+GTK_MIN_VERSION=3.20.0
 
 PKG_CHECK_MODULES(FONTVIEW,
                   fontconfig
diff --git a/src/font-view.c b/src/font-view.c
index ac356e0..8c09cb6 100644
--- a/src/font-view.c
+++ b/src/font-view.c
@@ -543,7 +543,6 @@ font_view_application_do_open (FontViewApplication *self,
 {
     GtkWidget *back_image;
     gchar *uri;
-    gboolean rtl;
 
     font_view_ensure_model (self);
 
@@ -572,9 +571,7 @@ font_view_application_do_open (FontViewApplication *self,
 
     if (self->back_button == NULL) {
         self->back_button = gtk_button_new ();
-        rtl = gtk_widget_get_default_direction () == GTK_TEXT_DIR_RTL;
-        back_image = gtk_image_new_from_icon_name (rtl ? "go-previous-rtl-symbolic" :
-                                                   "go-previous-symbolic",
+        back_image = gtk_image_new_from_icon_name ("go-previous-symbolic",
                                                    GTK_ICON_SIZE_MENU);
         gtk_button_set_image (GTK_BUTTON (self->back_button), back_image);
         gtk_widget_set_tooltip_text (self->back_button, _("Back"));