[gtk+] dialog: Let GtkButton manage its style classes

[Timm Bäder <baedert src gnome org>]

commit 86e94d0e0f391724370082c0707dc09c3c002752
Author: Timm Bäder <mail baedert org>
Date:   Sat Oct 29 10:16:03 2016 +0200

    dialog: Let GtkButton manage its style classes
    
    A button created using gtk_button_new_with_label will already have the
    text-button style class applied.

 gtk/gtkdialog.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkdialog.c b/gtk/gtkdialog.c
index 18da8e6..d8464b3 100644
--- a/gtk/gtkdialog.c
+++ b/gtk/gtkdialog.c
@@ -927,7 +927,6 @@ gtk_dialog_add_button (GtkDialog   *dialog,
   button = gtk_button_new_with_label (button_text);
   gtk_button_set_use_underline (GTK_BUTTON (button), TRUE);
 
-  gtk_style_context_add_class (gtk_widget_get_style_context (button), "text-button");
   gtk_widget_set_can_default (button, TRUE);
 
   gtk_widget_show (button);