[gimp] configure: remove Symbolic-Inverted's Makefile from configure!

[Jehan <jehanp src gnome org>]

commit da3ae4cf757fdcea3911216341cadb23d18dee5c
Author: Jehan <jehan girinstud io>
Date:   Wed May 30 12:36:32 2018 +0200

    configure: remove Symbolic-Inverted's Makefile from configure!

 configure.ac | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 07b52f0990..6d71357c8b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2685,7 +2685,6 @@ icons/Makefile
 icons/Color/Makefile
 icons/Legacy/Makefile
 icons/Symbolic/Makefile
-icons/Symbolic-Inverted/Makefile
 themes/Makefile
 themes/System/Makefile
 data/Makefile