[gtksourceview/gtksourceview-5-4] Revert "gutterlines: add helper to check for any quark set"

[Christian Hergert <chergert src gnome org>]

commit 4f6c6528413ef374f01f1c133ba46f1babf0f259
Author: Christian Hergert <chergert redhat com>
Date:   Thu Apr 21 13:15:56 2022 -0700

    Revert "gutterlines: add helper to check for any quark set"
    
    This reverts commit 67d6e60d7382cc3236825749b272e1dd7489bdf9.
    
    This shouldn't have been backported.

 gtksourceview/gtksourcegutterlines.c | 23 -----------------------
 gtksourceview/gtksourcegutterlines.h |  3 ---
 2 files changed, 26 deletions(-)
---
diff --git a/gtksourceview/gtksourcegutterlines.c b/gtksourceview/gtksourcegutterlines.c
index 364eb41b..327b8b89 100644
--- a/gtksourceview/gtksourcegutterlines.c
+++ b/gtksourceview/gtksourcegutterlines.c
@@ -634,26 +634,3 @@ _gtk_source_gutter_lines_get_cursor_line (GtkSourceGutterLines *lines)
 
        return lines->cursor_line;
 }
-
-/**
- * gtk_source_gutter_lines_has_any_class:
- * @lines: a #GtkSourceGutterLines
- * @line: a line contained within @lines
- *
- * Checks to see if the line has any GQuark classes set. This can be
- * used to help renderer implementations avoid work if nothing has
- * been set on the class.
- *
- * Returns: %TRUE if any quark was set for the line
- *
- * Since: 5.6
- */
-gboolean
-gtk_source_gutter_lines_has_any_class (GtkSourceGutterLines *lines,
-                                       guint                 line)
-{
-       if (lines == NULL || line < lines->first || line > lines->last || line - lines->first >= 
lines->lines->len)
-    return FALSE;
-
-  return g_array_index (lines->lines, LineInfo, line - lines->first).classes.len > 0;
-}
diff --git a/gtksourceview/gtksourcegutterlines.h b/gtksourceview/gtksourcegutterlines.h
index 3ef43c99..cbf8c50f 100644
--- a/gtksourceview/gtksourcegutterlines.h
+++ b/gtksourceview/gtksourcegutterlines.h
@@ -86,8 +86,5 @@ void           gtk_source_gutter_lines_get_line_yrange  (GtkSourceGutterLines
                                                          GtkSourceGutterRendererAlignmentMode  mode,
                                                          gint                                 *y,
                                                          gint                                 *height);
-GTK_SOURCE_AVAILABLE_IN_5_6
-gboolean       gtk_source_gutter_lines_has_any_class    (GtkSourceGutterLines                 *lines,
-                                                         guint                                 line);
 
 G_END_DECLS