[gobject-introspection] build: remove m4/as-compiler-flag.m4

[Colin Walters <walters src gnome org>]

commit df5b4d906dc8450b9537fd849e2837df14b2a47e
Author: Dieter Verfaillie <dieterv optionexplicit be>
Date:   Wed Sep 11 17:03:04 2013 +0200

    build: remove m4/as-compiler-flag.m4
    
    no longer used since b2fd4f54883cd701a0c280655c93e20b04897ed2

 Makefile.am            |    2 +-
 configure.ac           |    1 -
 m4/Makefile.am         |    1 -
 m4/as-compiler-flag.m4 |   33 ---------------------------------
 4 files changed, 1 insertions(+), 36 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index c04c05a..18fe091 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -28,7 +28,7 @@ ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 
 SUBDIRS = . docs tests build
 
-DIST_SUBDIRS = m4 $(SUBDIRS)
+DIST_SUBDIRS = $(SUBDIRS)
 DISTCHECK_CONFIGURE_FLAGS = --enable-gtk-doc --enable-doctool
 
 man_MANS +=                    \
diff --git a/configure.ac b/configure.ac
index d85a131..591b8bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -312,7 +312,6 @@ AC_SUBST(EXTRA_LINK_FLAGS)
 
 AC_CONFIG_FILES([
 Makefile
-m4/Makefile
 tests/Makefile
 tests/offsets/Makefile
 tests/scanner/Makefile