diff --git a/releasenotes/notes/remove-deprecated-skip_unless_attr-decorator-02bde59a00328f5c.yaml b/releasenotes/notes/remove-deprecated-skip_unless_attr-decorator-02bde59a00328f5c.yaml
new file mode 100644
index 0000000..621731d
--- /dev/null
+++ b/releasenotes/notes/remove-deprecated-skip_unless_attr-decorator-02bde59a00328f5c.yaml
@@ -0,0 +1,4 @@
+---
+upgrade:
+  - |
+    Remove the deprecated decorator ``skip_unless_attr`` in lib/decorators.py.
diff --git a/requirements.txt b/requirements.txt
index 023148b..2300214 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@
 netaddr>=0.7.18 # BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 oslo.concurrency>=3.20.0 # Apache-2.0
-oslo.config>=4.6.0 # Apache-2.0
+oslo.config>=5.1.0 # Apache-2.0
 oslo.log>=3.30.0 # Apache-2.0
 oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
 oslo.utils>=3.31.0 # Apache-2.0
diff --git a/tempest/common/utils/__init__.py b/tempest/common/utils/__init__.py
index 5a86caa..aa81864 100644
--- a/tempest/common/utils/__init__.py
+++ b/tempest/common/utils/__init__.py
@@ -78,7 +78,7 @@
         decorators.attr(type=list(args))(f)
 
         @functools.wraps(f)
-        def wrapper(self, *func_args, **func_kwargs):
+        def wrapper(*func_args, **func_kwargs):
             service_list = get_service_list()
 
             for service in args:
@@ -86,7 +86,7 @@
                     msg = 'Skipped because the %s service is not available' % (
                         service)
                     raise testtools.TestCase.skipException(msg)
-            return f(self, *func_args, **func_kwargs)
+            return f(*func_args, **func_kwargs)
         return wrapper
     return decorator
 
diff --git a/tempest/lib/decorators.py b/tempest/lib/decorators.py
index ef1003b..e99dd24 100644
--- a/tempest/lib/decorators.py
+++ b/tempest/lib/decorators.py
@@ -15,7 +15,6 @@
 import functools
 import uuid
 
-import debtcollector.removals
 from oslo_log import log as logging
 import six
 import testtools
@@ -56,9 +55,9 @@
     """
     def decorator(f):
         @functools.wraps(f)
-        def wrapper(self, *func_args, **func_kwargs):
+        def wrapper(*func_args, **func_kwargs):
             try:
-                return f(self, *func_args, **func_kwargs)
+                return f(*func_args, **func_kwargs)
             except Exception as exc:
                 exc_status_code = getattr(exc, 'status_code', None)
                 if status_code is None or status_code == exc_status_code:
@@ -87,25 +86,6 @@
     return decorator
 
 
-@debtcollector.removals.remove(removal_version='Queen')
-class skip_unless_attr(object):
-    """Decorator to skip tests if a specified attr does not exists or False"""
-    def __init__(self, attr, msg=None):
-        self.attr = attr
-        self.message = msg or ("Test case attribute %s not found "
-                               "or False") % attr
-
-    def __call__(self, func):
-        @functools.wraps(func)
-        def _skipper(*args, **kw):
-            """Wrapped skipper function."""
-            testobj = args[0]
-            if not getattr(testobj, self.attr, False):
-                raise testtools.TestCase.skipException(self.message)
-            func(*args, **kw)
-        return _skipper
-
-
 def attr(**kwargs):
     """A decorator which applies the testtools attr decorator
 
diff --git a/tempest/tests/lib/test_decorators.py b/tempest/tests/lib/test_decorators.py
index bbebcd3..ed0eea3 100644
--- a/tempest/tests/lib/test_decorators.py
+++ b/tempest/tests/lib/test_decorators.py
@@ -125,35 +125,6 @@
         self.assertRaises(ValueError, self._test_helper, _id)
 
 
-class TestSkipUnlessAttrDecorator(base.TestCase):
-    def _test_skip_unless_attr(self, attr, expected_to_skip=True):
-        class TestFoo(test.BaseTestCase):
-            expected_attr = not expected_to_skip
-
-            @decorators.skip_unless_attr(attr)
-            def test_foo(self):
-                pass
-
-        t = TestFoo('test_foo')
-        if expected_to_skip:
-            self.assertRaises(testtools.TestCase.skipException,
-                              t.test_foo)
-        else:
-            try:
-                t.test_foo()
-            except Exception:
-                raise testtools.TestCase.failureException()
-
-    def test_skip_attr_does_not_exist(self):
-        self._test_skip_unless_attr('unexpected_attr')
-
-    def test_skip_attr_false(self):
-        self._test_skip_unless_attr('expected_attr')
-
-    def test_no_skip_for_attr_exist_and_true(self):
-        self._test_skip_unless_attr('expected_attr', expected_to_skip=False)
-
-
 class TestRelatedBugDecorator(base.TestCase):
     def test_relatedbug_when_no_exception(self):
         f = mock.Mock()
diff --git a/tools/generate-tempest-plugins-list.py b/tools/generate-tempest-plugins-list.py
index 99df0d1..dd05438 100644
--- a/tools/generate-tempest-plugins-list.py
+++ b/tools/generate-tempest-plugins-list.py
@@ -28,12 +28,12 @@
 
 try:
     # For Python 3.0 and later
-    from urllib.error import HTTPError as HTTPError
+    from urllib.error import HTTPError
     import urllib.request as urllib
 except ImportError:
     # Fall back to Python 2's urllib2
     import urllib2 as urllib
-    from urllib2 import HTTPError as HTTPError
+    from urllib2 import HTTPError
 
 
 url = 'https://review.openstack.org/projects/'