[gegl] operations/common-gpl3+/polar-coordinates: Remove redundant code

[Debarshi Ray <debarshir src gnome org>]

commit 12d4374efc39bb3f6a1022df91d034d9e9419586
Author: Debarshi Ray <debarshir gnome org>
Date:   Tue Dec 19 08:05:47 2017 +0100

    operations/common-gpl3+/polar-coordinates: Remove redundant code
    
    GeglOperationFilter::get_bounding_box already forwards its source
    bounding box. There is no need to provide an implementation that does
    the same.

 operations/common-gpl3+/polar-coordinates.c |   16 +---------------
 1 files changed, 1 insertions(+), 15 deletions(-)
---
diff --git a/operations/common-gpl3+/polar-coordinates.c b/operations/common-gpl3+/polar-coordinates.c
index 3498bba..487e218 100644
--- a/operations/common-gpl3+/polar-coordinates.c
+++ b/operations/common-gpl3+/polar-coordinates.c
@@ -395,24 +395,11 @@ process (GeglOperation       *operation,
 }
 
 static GeglRectangle
-get_bounding_box (GeglOperation *operation)
-{
-  GeglRectangle  result = {0,0,0,0};
-  GeglRectangle *in_rect;
-
-  in_rect = gegl_operation_source_get_bounding_box (operation, "input");
-  if (!in_rect)
-    return result;
-
-  return *in_rect;
-}
-
-static GeglRectangle
 get_required_for_output (GeglOperation       *operation,
                          const gchar         *input_pad,
                          const GeglRectangle *roi)
 {
-  return get_bounding_box (operation);
+  return gegl_operation_get_bounding_box (operation);
 }
 
 static void
@@ -425,7 +412,6 @@ gegl_op_class_init (GeglOpClass *klass)
   filter_class    = GEGL_OPERATION_FILTER_CLASS (klass);
 
   operation_class->prepare                 = prepare;
-  operation_class->get_bounding_box        = get_bounding_box;
   operation_class->get_required_for_output = get_required_for_output;
 
   filter_class->process                    = process;