diff --git a/nova/api/openstack/compute/baremetal_nodes.py b/nova/api/openstack/compute/baremetal_nodes.py
index 727ce260be34..43ed0bd70d42 100644
--- a/nova/api/openstack/compute/baremetal_nodes.py
+++ b/nova/api/openstack/compute/baremetal_nodes.py
@@ -30,13 +30,6 @@ from nova.policies import baremetal_nodes as bn_policies
 ironic_client = importutils.try_import('ironicclient.client')
 ironic_exc = importutils.try_import('ironicclient.exc')
 
-node_fields = ['id', 'cpus', 'local_gb', 'memory_mb', 'pm_address',
-               'pm_user', 'service_host', 'terminal_port', 'instance_uuid']
-
-node_ext_fields = ['uuid', 'task_state', 'updated_at', 'pxe_config_path']
-
-interface_fields = ['id', 'address', 'datapath_id', 'port_no']
-
 CONF = nova.conf.CONF
 
 
diff --git a/nova/api/validation/parameter_types.py b/nova/api/validation/parameter_types.py
index eecbc621cc6b..11269b174cbf 100644
--- a/nova/api/validation/parameter_types.py
+++ b/nova/api/validation/parameter_types.py
@@ -207,9 +207,6 @@ valid_name_leading_trailing_spaces_regex = ValidationRegex(
     _("printable characters with at least one non space character"))
 
 
-valid_name_regex_obj = re.compile(valid_name_regex.regex, re.UNICODE)
-
-
 valid_description_regex_base = '^[%s]*$'
 
 
diff --git a/nova/compute/flavors.py b/nova/compute/flavors.py
index 2acff427dd40..a8dc8a77f515 100644
--- a/nova/compute/flavors.py
+++ b/nova/compute/flavors.py
@@ -138,15 +138,6 @@ def get_flavor_by_flavor_id(flavorid, ctxt=None, read_deleted="yes"):
     return objects.Flavor.get_by_flavor_id(ctxt, flavorid, read_deleted)
 
 
-def get_flavor_access_by_flavor_id(flavorid, ctxt=None):
-    """Retrieve flavor access list by flavor id."""
-    if ctxt is None:
-        ctxt = context.get_admin_context()
-
-    flavor = objects.Flavor.get_by_flavor_id(ctxt, flavorid)
-    return flavor.projects
-
-
 # NOTE(danms): This method is deprecated, do not use it!
 # Use instance.{old_,new_,}flavor instead, as instances no longer
 # have flavor information in system_metadata.
diff --git a/nova/db/sqlalchemy/api_models.py b/nova/db/sqlalchemy/api_models.py
index c709f047aab9..ae85eddb72e0 100644
--- a/nova/db/sqlalchemy/api_models.py
+++ b/nova/db/sqlalchemy/api_models.py
@@ -284,6 +284,7 @@ class KeyPair(API_BASE):
                   nullable=False, server_default='ssh')
 
 
+# TODO(stephenfin): Remove this as it's now unused post-placement split
 class ResourceClass(API_BASE):
     """Represents the type of resource for an inventory or allocation."""
     __tablename__ = 'resource_classes'
@@ -295,6 +296,7 @@ class ResourceClass(API_BASE):
     name = Column(String(255), nullable=False)
 
 
+# TODO(stephenfin): Remove this as it's now unused post-placement split
 class ResourceProvider(API_BASE):
     """Represents a mapping to a providers of resources."""
 
@@ -325,6 +327,7 @@ class ResourceProvider(API_BASE):
         nullable=True)
 
 
+# TODO(stephenfin): Remove this as it's now unused post-placement split
 class Inventory(API_BASE):
     """Represents a quantity of available resource."""
 
@@ -356,6 +359,7 @@ class Inventory(API_BASE):
         foreign_keys=resource_provider_id)
 
 
+# TODO(stephenfin): Remove this as it's now unused post-placement split
 class Allocation(API_BASE):
     """A use of inventory."""
 
@@ -381,6 +385,7 @@ class Allocation(API_BASE):
         foreign_keys=resource_provider_id)
 
 
+# TODO(stephenfin): Remove this as it's now unused post-placement split
 class ResourceProviderAggregate(API_BASE):
     """Associate a resource provider with an aggregate."""
 
@@ -394,6 +399,7 @@ class ResourceProviderAggregate(API_BASE):
     aggregate_id = Column(Integer, primary_key=True, nullable=False)
 
 
+# TODO(stephenfin): Remove this as it's now unused post-placement split
 class PlacementAggregate(API_BASE):
     """A grouping of resource providers."""
     __tablename__ = 'placement_aggregates'
@@ -597,6 +603,7 @@ class Trait(API_BASE):
     name = Column(Unicode(255), nullable=False)
 
 
+# TODO(stephenfin): Remove this as it's now unused post-placement split
 class ResourceProviderTrait(API_BASE):
     """Represents the relationship between traits and resource provider"""
 
@@ -614,6 +621,7 @@ class ResourceProviderTrait(API_BASE):
                                   nullable=False)
 
 
+# TODO(stephenfin): Remove this as it's unused
 class Project(API_BASE):
     """The project is the Keystone project."""
 
@@ -629,6 +637,7 @@ class Project(API_BASE):
     external_id = Column(String(255), nullable=False)
 
 
+# TODO(stephenfin): Remove this as it's unused
 class User(API_BASE):
     """The user is the Keystone user."""
 
@@ -644,6 +653,7 @@ class User(API_BASE):
     external_id = Column(String(255), nullable=False)
 
 
+# TODO(stephenfin): Remove this as it's unused
 class Consumer(API_BASE):
     """Represents a resource consumer."""
 
diff --git a/nova/loadables.py b/nova/loadables.py
index 4d727d2753e7..ef4df45139db 100644
--- a/nova/loadables.py
+++ b/nova/loadables.py
@@ -80,7 +80,7 @@ class BaseLoader(object):
         in the directory that defines this class.
         """
         classes = []
-        for dirpath, dirnames, filenames in os.walk(self.path):
+        for dirpath, _, filenames in os.walk(self.path):
             relpath = os.path.relpath(dirpath, self.path)
             if relpath == '.':
                 relpkg = ''