[gimp] app: remove duplicate include.

[Jehan Pagès <jehanp src gnome org>]

commit 986b3fd70a173d980f8877024c3564deb8cf445a
Author: Jehan <jehan girinstud io>
Date:   Mon Jan 29 01:08:54 2018 +0100

    app: remove duplicate include.

 app/dialogs/about-dialog.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/app/dialogs/about-dialog.c b/app/dialogs/about-dialog.c
index 58850c0..72d31cb 100644
--- a/app/dialogs/about-dialog.c
+++ b/app/dialogs/about-dialog.c
@@ -39,8 +39,6 @@
 #include "about-dialog.h"
 #include "authors.h"
 
-#include "git-version.h"
-
 #include "gimp-intl.h"