Remove thread refcount and remove NaClAppDtor()

src/native_client/src/trusted/service_runtime/sel_main.c

Index: src/native_client/src/trusted/service_runtime/sel_main.c
diff --git a/src/native_client/src/trusted/service_runtime/sel_main.c b/src/native_client/src/trusted/service_runtime/sel_main.c
index 1495100f4daf72d3a69ef7f604c27ae4f28956ea..badd0c5d88f29f4ef976b707887fc0b8f4dc1ab9 100644
--- a/src/native_client/src/trusted/service_runtime/sel_main.c
+++ b/src/native_client/src/trusted/service_runtime/sel_main.c
@@ -693,8 +693,6 @@ int main(int  ac,
     fflush(stdout);
   }
 
-  NaClAppDtor(&state);
-
  done_file_dtor:
   if ((*((struct Gio *) &gf)->vtbl->Close)((struct Gio *) &gf) == -1) {
     fprintf(stderr, "Error while closing \"%s\".\n", av[optind]);