maint: Drop unused GETTEXT_CPPFLAGS variable

Commit c0a8ea45 removed the use of gettextize, and the setting of
GETTEXT_CPPFLAGS, but did not scrub the now-unused variable from
Makefile.am snippets.
Signed-off-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

gnulib/lib/Makefile.am

@@ -26,5 +26,3 @@ SUFFIXES =
 noinst_LTLIBRARIES =
 
 include gnulib.mk
-
-INCLUDES = -I$(top_srcdir) $(GETTEXT_CPPFLAGS)

gnulib/tests/Makefile.am

@@ -18,8 +18,6 @@
 
 include gnulib.mk
 
-INCLUDES = $(GETTEXT_CPPFLAGS)
-
 GNULIB_TESTS0 =
 GNULIB_TESTS1 = $(GNULIB_TESTS)
 if WITH_EXPENSIVE_TESTS

src/Makefile.am

@@ -24,7 +24,7 @@ abs_topsrcdir = $(shell cd $(top_srcdir) && pwd)
 
 # No libraries with the exception of LIBXML should be listed
 # here. List them against the individual XXX_la_CFLAGS targets
-# that actually use them. Also keep GETTEXT_CPPFLAGS at the end.
+# that actually use them.
 INCLUDES =	-I../gnulib/lib \
 		-I$(top_srcdir)/gnulib/lib \
 		-I$(top_srcdir) \
@@ -35,7 +35,7 @@ INCLUDES =	-I../gnulib/lib \
 		-DIN_LIBVIRT \
 		-Dabs_topbuilddir="\"$(abs_topbuilddir)\"" \
 		-Dabs_topsrcdir="\"$(abs_topsrcdir)\"" \
-		$(GETTEXT_CPPFLAGS)
+		$(NULL)
 
 WARN_CFLAGS += $(STRICT_FRAME_LIMIT_CFLAGS)
 

tests/Makefile.am

@@ -31,7 +31,7 @@ INCLUDES = \
 	-I$(top_builddir)/src -I$(top_srcdir)/src \
 	-I$(top_srcdir)/src/util \
 	-I$(top_srcdir)/src/conf \
-	$(GETTEXT_CPPFLAGS)
+	$(NULL)
 
 WARN_CFLAGS += $(RELAXED_FRAME_LIMIT_CFLAGS)
 

tools/Makefile.am

@@ -21,7 +21,7 @@ INCLUDES = \
 	-I$(top_builddir)/src -I$(top_srcdir)/src \
 	-I$(top_srcdir)/src/util \
 	-I$(top_srcdir) \
-	$(GETTEXT_CPPFLAGS)
+	$(NULL)
 
 WARN_CFLAGS += $(STRICT_FRAME_LIMIT_CFLAGS)