Remove unused, obsolete check
From autoconf info Obsolete Macros:
"These days, it is portable to assume C89, and that signal
handlers return void, without needing to use this macro or RETSIGTYPE."
And we indeed assume so.
Signed-off-by: Ruben Kerkhof <ruben@rubenkerkhof.com>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>
Ruben Kerkhof