Un-deprecate Neutron FWaaS support

This effectively reverts dc5dd89152 .

Neutron FWaaS project was restored during Zed cycle[1] and is now
maintained.

[1] https://review.opendev.org/c/openstack/governance/+/828078

Co-Authored-By: Emma Foley <efoley@redhat.com>
Change-Id: I5836fbf3b413ece32e64b57c3cd332afcb70006d
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

ceilometer/network/services/fwaas.py

@@ -13,8 +13,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import warnings
-
 from oslo_log import log
 
 from ceilometer.network.services import base
@@ -33,13 +31,6 @@ class FirewallPollster(base.BaseServicesPollster):
               'firewall_policy_id',
               ]
 
-    def __init__(self, conf):
-        super().__init__(conf)
-
-        warnings.warn('Support for Neutron FWaaS has been deprecated '
-                      'and will be removed in a future release.',
-                      category=DeprecationWarning, stacklevel=2)
-
     @property
     def default_discovery(self):
         return 'fw_services'
@@ -80,13 +71,6 @@ class FirewallPolicyPollster(base.BaseServicesPollster):
               'audited',
               ]
 
-    def __init__(self, conf):
-        super().__init__(conf)
-
-        warnings.warn('Support for Neutron FWaaS has been deprecated '
-                      'and will be removed in a future release.',
-                      category=DeprecationWarning, stacklevel=2)
-
     @property
     def default_discovery(self):
         return 'fw_policy'

releasenotes/notes/undeprecate-neutron-fwaas-9ad1b7fb10056e38.yaml

@@ -0,0 +1,5 @@
+---
+other:
+  - |
+    Support for Neutron FWaaS has been un-deprecated, because FWaaS project
+    was restored and is now maintained.