[gegl] spiral: remove unused function

[N/A <ell src gnome org>]

commit 464d5a1831e841caaf838a540d215fe81bd7af03
Author: Ell <ell_se yahoo com>
Date:   Mon Apr 17 20:54:40 2017 -0400

    spiral: remove unused function

 operations/workshop/spiral.c |   11 -----------
 1 files changed, 0 insertions(+), 11 deletions(-)
---
diff --git a/operations/workshop/spiral.c b/operations/workshop/spiral.c
index 1d5bbe1..9237a92 100644
--- a/operations/workshop/spiral.c
+++ b/operations/workshop/spiral.c
@@ -19,7 +19,6 @@
 
 #include "config.h"
 #include <glib/gi18n-lib.h>
-#include <math.h>
 
 #ifdef GEGL_PROPERTIES
 
@@ -84,16 +83,6 @@ property_int    (height, _("Height"), 768)
 #include "gegl-op.h"
 #include <math.h>
 
-static inline gdouble
-odd_pow (gdouble base,
-         gdouble exponent)
-{
-  if (base >= 0.0)
-    return  pow ( base, exponent);
-  else
-    return -pow (-base, exponent);
-}
-
 static void
 prepare (GeglOperation *operation)
 {