maint: stop using @acronym{...} in texinfo sources

* doc/diffutils.texi: Remove all uses of @acronym{...},
per recommendation by Karl Berry.
* cfg.mk (local-checks-to-skip): Remove exemption, enabling
the @acronym{-prohibiting syntax-check rule.

1 files changed, 1 insertions, 2 deletions

diff --git a/cfg.mk b/cfg.mk
index b838488..6a0620c 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -24,8 +24,7 @@ manual_title = Comparing and Merging Files
 # Tests not to run as part of "make distcheck".
 local-checks-to-skip =		\
   sc_error_message_period	\
-  sc_error_message_uppercase	\
-  sc_texinfo_acronym
+  sc_error_message_uppercase
 
 # Tools used to bootstrap this package, used for "announcement".
 bootstrap-tools = autoconf,automake,gnulib