chore(test): remove obsolete Mender v1.7.0 migration tests

Remove test_db_migration.py and its v1 legacy client fixtures from
common_setup.py. These tests verified upgrading from Mender v1.7.0
(released 2017) to the current version. This migration path that is no
longer supported. The fixtures were only used by this test file.

Signed-off-by: Maciej Pasinski <maciej.pasinski@northern.tech>
Signed-off-by: pasinskim <marcin.pasinski@northern.tech>

Author: pasinskim

tests/common_setup.py

@@ -169,30 +169,6 @@ def standard_setup_without_client(request):
     return env
 
 
-@pytest.fixture(scope="function")
-def setup_with_legacy_v1_client(request):
-    # The legacy 1.7.0 client was only built for qemux86-64, so skip tests using
-    # it when running other platforms.
-    if conftest.machine_name != "qemux86-64":
-        pytest.skip(
-            "Test only works with qemux86-64, and this is %s" % conftest.machine_name
-        )
-
-    env = container_factory.get_legacy_v1_client_setup()
-    request.addfinalizer(env.teardown)
-
-    env.setup()
-
-    env.device = MenderDevice(env.get_mender_clients()[0])
-    env.device.ssh_is_opened()
-
-    reset_mender_api(env)
-    devauth.accept_devices(1)
-
-    env.auth = auth
-    return env
-
-
 @pytest.fixture(scope="function")
 def setup_with_legacy_v3_client(request):
     env = container_factory.get_legacy_v3_client_setup()
@@ -496,26 +472,6 @@ def enterprise_with_short_lived_token(request):
     return env
 
 
-@pytest.fixture(scope="function")
-def enterprise_with_legacy_v1_client(request):
-    env = container_factory.get_enterprise_legacy_v1_client_setup(num_clients=0)
-    request.addfinalizer(env.teardown)
-
-    env.setup()
-    reset_mender_api(env)
-
-    tenant = create_tenant(env)
-    new_tenant_client(env, "mender-client", tenant["tenant_token"])
-    env.device_group.ssh_is_opened()
-
-    devauth_tenant = DeviceAuthV2(env.auth)
-    devauth_tenant.accept_devices(1)
-    devices = devauth_tenant.get_devices_status("accepted")
-    assert 1 == len(devices)
-
-    return env
-
-
 @pytest.fixture(scope="function")
 def enterprise_with_legacy_v3_client(request):
     env = container_factory.get_enterprise_legacy_v3_client_setup(num_clients=0)