configure.ac: Remove Leopard hack which is no longer necessary

Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
(cherry picked from commit 330b55e)

configure.ac

@@ -47,13 +47,6 @@ AC_ARG_WITH(bundle-id-prefix,  AS_HELP_STRING([--with-bundle-id-prefix=PATH], [P
 AC_SUBST([BUNDLE_ID_PREFIX])
 AC_DEFINE_UNQUOTED(BUNDLE_ID_PREFIX, "$BUNDLE_ID_PREFIX", [Prefix to use for bundle identifiers])
 
-# dock-support.o has weak symbols that will not be present at build time on Leopard
-case $host_os in
-    darwin9.*)
-        LDFLAGS="$LDFLAGS -undefined suppress -flat_namespace"
-        ;;
-esac
-
 AC_OUTPUT([Makefile
 	   lib/Makefile
 	   src/Makefile