bind: Drop 9.11 bbappend

oe-core comes now with 9.16.23 for which the warning doesn't apply
anymore.

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

meta-oniro-core/recipes-connectivity/bind/bind_9.11.%.bbappend

-# SPDX-FileCopyrightText: Huawei Inc.
-#
-# SPDX-License-Identifier: Apache-2.0
-
-do_configure_prepend(){
-	bbwarn "ISC BIND 9.11 or its libs is pulled in into the build. It is unsupported and possibly insecure!"
-	bbwarn "If ISC BIND is pulled in by dhcp-client, please consider switching to use NetworkManager."
-}