[gimp/metadata-browser] configure.ac: Remove AC_TYPE_SIGNAL

[Roman Joost <romanofski src gnome org>]

commit 277e6415184b3877676cec5c2fe59fc08dcb0f8d
Author: Javier JardÃn <jjardon gnome org>
Date:   Mon Oct 17 01:02:59 2011 +0100

    configure.ac: Remove AC_TYPE_SIGNAL
    
    Out code can safely assume C89 semantics that RETSIGTYPE is void

 configure.ac |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 37c97ac..f343e1c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -418,7 +418,6 @@ AC_HEADER_TIME
 AC_CHECK_HEADERS(sys/param.h sys/time.h sys/times.h sys/wait.h unistd.h)
 
 AC_TYPE_PID_T
-AC_TYPE_SIGNAL
 AC_FUNC_VPRINTF
 
 AC_FUNC_ALLOCA