Remove flaky servicelab metrics DBPut P95/P99 (#9844)

Summary:
The P95 and P99 metrics are flaky, similar to DBGet ones which removed
in https://github.com/facebook/rocksdb/issues/9742 .

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9844

Test Plan: `$ ./buckifier/buckify_rocksdb.py`

Reviewed By: ajkr

Differential Revision: D35655531

Pulled By: jay-zhuang

fbshipit-source-id: c1409f0fba4e23d461a65f988c27ac5e2ae85d13

buckifier/buckify_rocksdb.py

+#!/usr/bin/env python3
 # Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 from __future__ import absolute_import
 from __future__ import division