Revert t262 changes

Author: littledivy

run-test262.c

@@ -1565,7 +1565,6 @@ int run_test_buf(const char *filename, char *harness, namelist_t *ip,
 #ifdef CONFIG_AGENT
     js_agent_free(ctx);
 #endif
-    JS_RunGC(rt);
     JS_FreeContext(ctx);
     JS_FreeRuntime(rt);