remove useless file. (#5140)

core/src/main/resources/META-INF/services/com.alibaba.nacos.core.distributed.distro.core.RetryPolicy

-#
-# Copyright 1999-2018 Alibaba Group Holding Ltd.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-com.alibaba.nacos.core.distributed.distro.core.SimpleDelayRetryPolicy
-com.alibaba.nacos.core.distributed.distro.core.TimeWeightedRetryPolicy