Removed NGX_OLD_THREADS from select and poll modules.

These modules can't be compiled on win32.
diff --git a/src/event/modules/ngx_poll_module.c b/src/event/modules/ngx_poll_module.c
index e48a822..4370950 100644
--- a/src/event/modules/ngx_poll_module.c
+++ b/src/event/modules/ngx_poll_module.c
@@ -413,15 +413,5 @@
         return NGX_CONF_OK;
     }
 
-#if (NGX_OLD_THREADS)
-
-    ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
-                  "poll() is not supported in the threaded mode");
-    return NGX_CONF_ERROR;
-
-#else
-
     return NGX_CONF_OK;
-
-#endif
 }
diff --git a/src/event/modules/ngx_select_module.c b/src/event/modules/ngx_select_module.c
index 46004e5..5a976bd 100644
--- a/src/event/modules/ngx_select_module.c
+++ b/src/event/modules/ngx_select_module.c
@@ -419,15 +419,5 @@
         return NGX_CONF_ERROR;
     }
 
-#if (NGX_OLD_THREADS)
-
-    ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
-                  "select() is not supported in the threaded mode");
-    return NGX_CONF_ERROR;
-
-#else
-
     return NGX_CONF_OK;
-
-#endif
 }