[gtk+] Drop another old, unused script

[Matthias Clasen <matthiasc src gnome org>]

commit 214bd065d0551ea242252215b181e875e24140dc
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 21 23:17:29 2014 -0400

    Drop another old, unused script

 Makefile.am   |    1 -
 makecopyright |  120 ---------------------------------------------------------
 2 files changed, 0 insertions(+), 121 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 64af317..2cb7769 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,7 +9,6 @@ ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 EXTRA_DIST +=                  \
        autogen.sh              \
        HACKING                 \
-       makecopyright           \
        NEWS.pre-1-0            \
        README.commits  \
        README.win32            \