[gegl] workshop: remove makefile reference to nonexistant op

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 75fbbc984a4ec54151e9de884ad0ff14c6c07023
Author: Øyvind Kolås <pippin gimp org>
Date:   Tue Jul 23 19:30:47 2019 +0200

    workshop: remove makefile reference to nonexistant op

 operations/workshop/Makefile.am | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/operations/workshop/Makefile.am b/operations/workshop/Makefile.am
index 87591b144..7be3aada0 100644
--- a/operations/workshop/Makefile.am
+++ b/operations/workshop/Makefile.am
@@ -22,7 +22,6 @@ ops = \
        aces-rrt.la \
        alpha-inpaint.la \
        integral-image.la \
-       munker-tartan.la \
        rawbayer-load.la  \
        segment-kmeans.la \
        selective-hue-saturation.la