remove unused struct sigactions

struct sigaction act, old_term, old_quit, old_int;
all unused.

Author: crrodriguez

sapi/fpm/fpm/fpm_main.c

@@ -93,9 +93,6 @@ int __riscosify_control = __RISCOSIFY_STRICT_UNIX_SPECS;
 #include "fpm_log.h"
 #include "zlog.h"
 
-/* XXX this will need to change later when threaded fastcgi is implemented.  shane */
-struct sigaction act, old_term, old_quit, old_int;
-
 static void (*php_php_import_environment_variables)(zval *array_ptr);
 
 /* these globals used for forking children on unix systems */