Hide GtkTextAttributes functions

The type is private, so making functions operating on it public is
pointless.

docs/reference/gtk/meson.build

@@ -244,6 +244,7 @@ private_headers = [
   'gtkstylepropertyprivate.h',
   'gtkstyleproviderprivate.h',
   'gtktestatcontextprivate.h',
+  'gtktextattributes.h',
   'gtktextbufferprivate.h',
   'gtktextchildprivate.h',
   'gtktextdisplayprivate.h',

gtk/gtktextattributes.c

@@ -100,10 +100,6 @@ gtk_text_attributes_copy (GtkTextAttributes *src)
   return dest;
 }
 
-G_DEFINE_BOXED_TYPE (GtkTextAttributes, gtk_text_attributes,
-                     gtk_text_attributes_ref,
-                     gtk_text_attributes_unref)
-
 /**
  * gtk_text_attributes_copy_values:
  * @src: a #GtkTextAttributes

gtk/gtktextattributes.h

@@ -58,9 +58,6 @@
 G_BEGIN_DECLS
 
 typedef struct _GtkTextAttributes GtkTextAttributes;
-
-#define GTK_TYPE_TEXT_ATTRIBUTES     (gtk_text_attributes_get_type ())
-
 typedef struct _GtkTextAppearance GtkTextAppearance;
 
 /**
@@ -184,23 +181,13 @@ struct _GtkTextAttributes
   char *font_features;
 };
 
-GDK_AVAILABLE_IN_ALL
 GtkTextAttributes* gtk_text_attributes_new         (void);
-GDK_AVAILABLE_IN_ALL
 GtkTextAttributes* gtk_text_attributes_copy        (GtkTextAttributes *src);
-GDK_AVAILABLE_IN_ALL
 void               gtk_text_attributes_copy_values (GtkTextAttributes *src,
                                                     GtkTextAttributes *dest);
-GDK_AVAILABLE_IN_ALL
 void               gtk_text_attributes_unref       (GtkTextAttributes *values);
-GDK_AVAILABLE_IN_ALL
 GtkTextAttributes *gtk_text_attributes_ref         (GtkTextAttributes *values);
 
-GDK_AVAILABLE_IN_ALL
-GType              gtk_text_attributes_get_type    (void) G_GNUC_CONST;
-
-
 G_END_DECLS
 
 #endif
-