gnucash maint: Drop Makevars - an autotools artefact for gettext

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash/commit/2e6ff097 (commit)
	from  https://github.com/Gnucash/gnucash/commit/774dc5dd (commit)



commit 2e6ff09746a1dcf861c5b284e16088c7327390f5
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Wed Jun 30 17:34:54 2021 +0200

    Drop Makevars - an autotools artefact for gettext
    
    It offered only a subset of the parameters we are using in
    po/CMakeLists.txt and the duplicate definition was confusing



Summary of changes:
 po/CMakeLists.txt |  4 +---
 po/Makevars       | 31 -------------------------------
 2 files changed, 1 insertion(+), 34 deletions(-)
 delete mode 100644 po/Makevars