[gtk+] widget: Don't unnecessarily export function

[Timm Bäder <baedert src gnome org>]

commit d52f6ff7102d1f0955a5c48e4209bca826625793
Author: Timm Bäder <mail baedert org>
Date:   Sat Jun 11 07:53:33 2016 +0200

    widget: Don't unnecessarily export function
    
    _gtk_widget_get_translation_to_window is only used in gtkwidget.c

 gtk/gtkwidget.c        |    2 +-
 gtk/gtkwidgetprivate.h |    5 -----
 2 files changed, 1 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 5b87a33..b39e4d7 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -7432,7 +7432,7 @@ _gtk_widget_captured_event (GtkWidget *widget,
 }
 
 /* Returns TRUE if a translation should be done */
-gboolean
+static gboolean
 _gtk_widget_get_translation_to_window (GtkWidget      *widget,
                                       GdkWindow      *window,
                                       int            *x,
diff --git a/gtk/gtkwidgetprivate.h b/gtk/gtkwidgetprivate.h
index aa7dba6..4e26280 100644
--- a/gtk/gtkwidgetprivate.h
+++ b/gtk/gtkwidgetprivate.h
@@ -209,11 +209,6 @@ void _gtk_widget_get_preferred_size_and_baseline(GtkWidget        *widget,
                                                 gint              *natural_baseline);
 gboolean _gtk_widget_has_baseline_support (GtkWidget *widget);
 
-gboolean _gtk_widget_get_translation_to_window (GtkWidget      *widget,
-                                                GdkWindow      *window,
-                                                int            *x,
-                                                int            *y);
-
 const gchar*      _gtk_widget_get_accel_path               (GtkWidget *widget,
                                                             gboolean  *locked);