qa/tasks/cephfs: remove sys.exc_clear() calls

sys.exc_clear() was removed in Python3, see
https://docs.python.org/3/whatsnew/3.0.html#index-22. so we should not
call it.

Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit 702de9590cdfe6c95ef8e87cb74cd05944e380c9)

diff --git a/qa/tasks/cephfs/test_snapshots.py b/qa/tasks/cephfs/test_snapshots.py
index a1dcc23d340228768dee711e3757320d5acc1202..519c2a0fc1c4d7b3fa1299365840214e9e3808b8 100644 (file)
--- a/qa/tasks/cephfs/test_snapshots.py
+++ b/qa/tasks/cephfs/test_snapshots.py
@@ -474,7 +474,6 @@ class TestSnapshots(CephFSTestCase):
                 # failing at the last mkdir beyond the limit is expected
                 if sno == snaps:
                     log.info("failed while creating snap #{}: {}".format(sno, repr(e)))
-                    sys.exc_clear()
                     raise TestSnapshots.SnapLimitViolationException(sno)
 
     def test_mds_max_snaps_per_dir_default_limit(self):
@@ -500,7 +499,6 @@ class TestSnapshots(CephFSTestCase):
             self.create_dir_and_snaps("accounts", new_limit + 1)
         except TestSnapshots.SnapLimitViolationException as e:
             if e.failed_snapshot_number == (new_limit + 1):
-                sys.exc_clear()
                 pass
         # then increase the limit by one and test
         new_limit = new_limit + 1