Remove EC2 test case that incompatible with Amazon

This test tries to allocate address and disassociate it without association.
Amazon allows to do it for EC2-classic and does not throw error.
But EC2 implementation in Nova throws error.
We have the same test in our own test suite against stackforge/ec2-api
(but it's not merged yet) and I checked it against Amazon -
https://review.openstack.org/#/c/171050/

I suggest to remove this test from tempest as incompatible with Amazon.
Also because of EC2 is deprecated in nova and can't be fixed.

Change-Id: I711314408ec7c4ea75f93348a7335843713e9a2b
diff --git a/tempest/thirdparty/boto/test_ec2_network.py b/tempest/thirdparty/boto/test_ec2_network.py
deleted file mode 100644
index ce20156..0000000
--- a/tempest/thirdparty/boto/test_ec2_network.py
+++ /dev/null
@@ -1,44 +0,0 @@
-# Copyright 2012 OpenStack Foundation
-# All Rights Reserved.
-#
-#    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.
-
-from tempest import test
-from tempest.thirdparty.boto import test as boto_test
-
-
-class EC2NetworkTest(boto_test.BotoTestCase):
-
-    @classmethod
-    def setup_clients(cls):
-        super(EC2NetworkTest, cls).setup_clients()
-        cls.ec2_client = cls.os.ec2api_client
-
-    # Note(afazekas): these tests for things duable without an instance
-    @test.idempotent_id('48b912af-9403-4b4f-aa69-fa76d690a81f')
-    def test_disassociate_not_associated_floating_ip(self):
-        # EC2 disassociate not associated floating ip
-        ec2_codes = self.ec2_error_code
-        address = self.ec2_client.allocate_address()
-        public_ip = address.public_ip
-        rcuk = self.addResourceCleanUp(self.ec2_client.release_address,
-                                       public_ip)
-        addresses_get = self.ec2_client.get_all_addresses(
-            addresses=(public_ip,))
-        self.assertEqual(len(addresses_get), 1)
-        self.assertEqual(addresses_get[0].public_ip, public_ip)
-        self.assertBotoError(ec2_codes.client.InvalidAssociationID.NotFound,
-                             address.disassociate)
-        self.ec2_client.release_address(public_ip)
-        self.assertAddressReleasedWait(address)
-        self.cancelResourceCleanUp(rcuk)