gnucash maint: Fix a couple of double EXTRA_DIST declarations from the previous commit

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/17c48b19 (commit)
	from  https://github.com/Gnucash/gnucash/commit/b1f9f801 (commit)



commit 17c48b19a793aa8efff060d78a093621ca9d4144
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Mon Jul 10 20:16:35 2017 +0200

    Fix a couple of double EXTRA_DIST declarations from the previous commit



Summary of changes:
 src/backend/sql/Makefile.am         | 2 +-
 src/backend/sql/test/Makefile.am    | 2 +-
 src/import-export/test/Makefile.am  | 2 +-
 src/libqof/qof/test/Makefile.am     | 2 +-
 src/optional/gtkmm/test/Makefile.am | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)