configure.ac: Remove some more obsolete macros

AC_TYPE_SIGNAL: obsolete when assuming C89 or better
AC_HEADER_SYS_WAIT: current systems are compatible with POSIX

diff --git a/configure.ac b/configure.ac
index 0c59ab20030256e07d19b5ba5f13789616b6cf0b..525816492ce09286c7e1390288c49be328924474 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -847,10 +847,6 @@ AM_CONDITIONAL(INCLUDE_IM_TI_ET, [test x"$INCLUDE_ti_et" = xyes])
 AM_CONDITIONAL(INCLUDE_IM_VIQR, [test x"$INCLUDE_viqr" = xyes])
 AM_CONDITIONAL(INCLUDE_IM_XIM, [test x"$INCLUDE_xim" = xyes])
 
-AC_HEADER_SYS_WAIT
-
-AC_TYPE_SIGNAL
-
 # Checks to see whether we should include mediaLib
 # support.
 #