Updating TC_RVCRUNM_2_2 python test module:

- Resolving linting errors

Author: j-ororke

src/python_testing/TC_RVCRUNM_2_2.py

@@ -145,7 +145,6 @@ async def test_TC_RVCRUNM_2_2(self):
             self.app_pipe = self.app_pipe + str(app_pid)
 
         RVCRun_cluster = Clusters.RvcRunMode
-        attributes = RVCRun_cluster.Attributes
         commands = RVCRun_cluster.Commands
 
         if not await self.command_guard(endpoint=self.endpoint, command=commands.ChangeToMode):