Fix python linter errors.

Author: pidarped

src/python_testing/TC_AVSMTestBase.py

@@ -22,13 +22,13 @@
 import matter.clusters as Clusters
 from matter.clusters import Globals
 from matter.interaction_model import InteractionModelError, Status
-from matter.testing.matter_testing import AttributeMatcher
+from matter.testing.matter_testing import AttributeMatcher, AttributeValue
 
 logger = logging.getLogger(__name__)
 
 
 def wmark_osd_matcher(attribute_id: int, wmark: bool, osd: bool, wmark_check: bool, osd_check: bool) -> "AttributeMatcher":
-    def predicate(report: "AttributeValue") -> bool:
+    def predicate(report: AttributeValue) -> bool:
         if report.attribute != attribute_id:
             return False
 

src/python_testing/TC_AVSM_2_3.py

@@ -189,8 +189,8 @@ async def test_TC_AVSM_2_3(self):
 
         self.step(7)
         if aHardwareEncoder:
-            expected_wmark = None if aWmark is None else not aWmark,
-            expected_osd = None if aOSD is None else not aOSD,
+            expected_wmark = None if aWmark is None else not aWmark
+            expected_osd = None if aOSD is None else not aOSD
             sub_handler.await_all_expected_report_matches(expected_matchers=[wmark_osd_matcher(
                 attr.AllocatedSnapshotStreams, expected_wmark, expected_osd, wmarkSupport, osdSupport)], timeout_sec=20)