diff --git a/neutron/manager.py b/neutron/manager.py
index aea913c5972..8b5925901a0 100644
--- a/neutron/manager.py
+++ b/neutron/manager.py
@@ -274,16 +274,6 @@ class NeutronManager(metaclass=profiler.TracedMeta):
             resource,
             res_ctrl_mappings.get(resource.replace('-', '_')))
 
-    # TODO(blogan): This isn't used by anything else other than tests and
-    # probably should be removed
-    @classmethod
-    def get_service_plugin_by_path_prefix(cls, path_prefix):
-        service_plugins = directory.get_unique_plugins()
-        for service_plugin in service_plugins:
-            plugin_path_prefix = getattr(service_plugin, 'path_prefix', None)
-            if plugin_path_prefix and plugin_path_prefix == path_prefix:
-                return service_plugin
-
     @classmethod
     def add_resource_for_path_prefix(cls, resource, path_prefix):
         resources = cls.get_instance().path_prefix_resource_mappings[
diff --git a/neutron/tests/unit/test_manager.py b/neutron/tests/unit/test_manager.py
index 0aa14860060..7a8da5ccf8d 100644
--- a/neutron/tests/unit/test_manager.py
+++ b/neutron/tests/unit/test_manager.py
@@ -14,7 +14,6 @@
 #    under the License.
 
 from unittest import mock
-import weakref
 
 import fixtures
 from neutron_lib.plugins import constants as lib_const
@@ -248,20 +247,3 @@ class NeutronManagerTestCase(base.BaseTestCase):
         with testlib_api.ExpectedException(ImportError):
             manager.NeutronManager.load_class_for_provider(
                     'neutron.core_plugins', 'ml2XXXXXX')
-
-    def test_get_service_plugin_by_path_prefix_3(self):
-        cfg.CONF.set_override("core_plugin", DB_PLUGIN_KLASS)
-        nm = manager.NeutronManager.get_instance()
-
-        class pclass:
-            def __init__(self, path_prefix):
-                self.path_prefix = path_prefix
-
-        x_plugin, y_plugin = pclass('xpa'), pclass('ypa')
-        directory.add_plugin('x', x_plugin)
-        directory.add_plugin('y', y_plugin)
-        self.assertEqual(weakref.proxy(x_plugin),
-                         nm.get_service_plugin_by_path_prefix('xpa'))
-        self.assertEqual(weakref.proxy(y_plugin),
-                         nm.get_service_plugin_by_path_prefix('ypa'))
-        self.assertIsNone(nm.get_service_plugin_by_path_prefix('abc'))
diff --git a/tox.ini b/tox.ini
index 2656e1caea7..19c3b6570cb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -181,7 +181,7 @@ setenv =
 commands =
   stestr run --no-subunit-trace {posargs}
   coverage combine
-  coverage report --fail-under=82 --skip-covered
+  coverage report --fail-under=80 --skip-covered
   coverage html -d cover
   coverage xml -o cover/coverage.xml