[PATCH xserver] autoconf: remove redundant AC_PROG_MAKE_SET

[Gaetan Nadon]

Already included during Automake initialization.

After the patch, no change:
configure:3893: checking whether make sets $(MAKE)
configure:3915: result: yes

Signed-off-by: Gaetan Nadon <memsize at videotron.ca>
---
 configure.ac |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/configure.ac b/configure.ac
index e4fcba4..8364432 100644
--- a/configure.ac
+++ b/configure.ac
@@ -76,7 +76,6 @@ AC_PROG_LN_S
 AC_LIBTOOL_WIN32_DLL
 AC_DISABLE_STATIC
 AC_PROG_LIBTOOL
-AC_PROG_MAKE_SET
 PKG_PROG_PKG_CONFIG
 AC_PROG_LEX
 AC_PROG_YACC
-- 
1.7.4.1