Remove deprecated series metadata and tests

Change-Id: I222665802cc772842b40fef88008cb0f764d8b1f

src/metadata.yaml

@@ -14,7 +14,6 @@ tags:
 series:
  - trusty
  - xenial
- - yakkety
  - zesty
 subordinate: false
 provides:

src/tests/gate-basic-yakkety-newton

@@ -1,23 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2016 Canonical 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.
-
-"""Amulet tests on a basic designate deployment on yakkety-newton."""
-
-from basic_deployment import DesignateBasicDeployment
-
-if __name__ == '__main__':
-    deployment = DesignateBasicDeployment(series='yakkety')
-    deployment.run_tests()