Remove uGNI library cleanup logic

The library cleanup logic was added in hopes of fixing the
uGNI resource leak that occurs when communication domain
members exit. This logic did not fix the leak and results
in warnings from the device driver on process exit
which is confusing to the user.

lib/src/zap/ugni/zap_ugni.c

@@ -2976,21 +2976,3 @@ zap_err_t zap_transport_get(zap_t *pz, zap_log_fn_t log_fn,
 	return ZAP_ERR_RESOURCE;
 }
 
-static void __attribute__ ((destructor)) ugni_fini(void);
-static void ugni_fini()
-{
-	gni_return_t grc;
-	struct ugni_mh *mh;
-
-	while (!LIST_EMPTY(&mh_list)) {
-		mh = LIST_FIRST(&mh_list);
-		ZUGNI_LIST_REMOVE(mh, link);
-		(void)GNI_MemDeregister(_dom.nic, &mh->mh);
-		free(mh);
-	}
-
-	grc = GNI_CdmDestroy(_dom.cdm);
-	if (grc != GNI_RC_SUCCESS)
-		LOG("GNI_CdmDestroy failed with error %d\n", grc);
-}
-