[gtksourceview/wip/build-fixes] build: don't define ACLOCAL_AMFLAGS (deprecated)

[Sébastien Wilmet <swilmet src gnome org>]

commit 9ae5d4eec0ef8e0861c453cd28218ecd0e18c0be
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Aug 30 12:41:07 2015 +0200

    build: don't define ACLOCAL_AMFLAGS (deprecated)
    
    See the FAQ entry "What's up with ACLOCAL_AMFLAGS?" at:
    https://wiki.gnome.org/Projects/GnomeCommon/Migration

 Makefile.am                           |    2 --
 tests/syntax-highlighting/Makefile.am |    2 --
 2 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index de898fd..fef1c27 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,3 @@
-ACLOCAL_AMFLAGS  = -I m4 ${ACLOCAL_FLAGS}
-
 SUBDIRS = gtksourceview po data docs tests
 
 pkgconfigdir = $(libdir)/pkgconfig
diff --git a/tests/syntax-highlighting/Makefile.am b/tests/syntax-highlighting/Makefile.am
index 319be41..ae46867 100644
--- a/tests/syntax-highlighting/Makefile.am
+++ b/tests/syntax-highlighting/Makefile.am
@@ -1,5 +1,3 @@
-ACLOCAL_AMFLAGS = -I m4
-
 EXTRA_DIST += README.W32
 
 if HAVE_DOXYGEN