Nix unused raise_if_custom_resource_class_pre_v1_1

The only reference to
nova.db.sqlalchemy.resource_class_cache.raise_if_custom_resource_class_pre_v1_1
was removed in Ideca0f09f5dc4ba6bb194a2413ed93cf592dd963.  This was also the
only place nova.rc_fields.ResourceClass.V1_0 was used.  This patch removes
both.

Change-Id: I17081666db55e2cca21852bb5f520accb2c807a2

nova/db/sqlalchemy/resource_class_cache.py

@@ -11,7 +11,6 @@
 #    under the License.
 
 from oslo_concurrency import lockutils
-import six
 import sqlalchemy as sa
 
 # TODO(cdent): This file and its location is problematic for placement
@@ -26,23 +25,6 @@ _RC_TBL = models.ResourceClass.__table__
 _LOCKNAME = 'rc_cache'
 
 
-def raise_if_custom_resource_class_pre_v1_1(rc):
-    """Raises ValueError if the supplied resource class identifier is
-    *not* in the set of standard resource classes as of Inventory/Allocation
-    object version 1.1
-
-    param rc: Integer or string identifier for a resource class
-    """
-    if isinstance(rc, six.string_types):
-        if rc not in fields.ResourceClass.V1_0:
-            raise ValueError
-    else:
-        try:
-            fields.ResourceClass.V1_0[rc]
-        except IndexError:
-            raise ValueError
-
-
 @db_api.placement_context_manager.reader
 def _refresh_from_db(ctx, cache):
     """Grabs all custom resource classes from the DB table and populates the

nova/rc_fields.py

@@ -48,12 +48,6 @@ class ResourceClass(fields.StringField):
                 NUMA_SOCKET, NUMA_CORE, NUMA_THREAD, NUMA_MEMORY_MB,
                 IPV4_ADDRESS, VGPU, VGPU_DISPLAY_HEAD)
 
-    # This is the set of standard resource classes that existed before
-    # we opened up for custom resource classes in version 1.1 of various
-    # objects in nova/objects/resource_provider.py
-    V1_0 = (VCPU, MEMORY_MB, DISK_GB, PCI_DEVICE, SRIOV_NET_VF, NUMA_SOCKET,
-            NUMA_CORE, NUMA_THREAD, NUMA_MEMORY_MB, IPV4_ADDRESS)
-
     @classmethod
     def normalize_name(cls, rc_name):
         if rc_name is None: