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 88a23a0ae7e4e70b79d570df340b2f890d6ab186..f09b645c4c2a8372c862fa13b36c8fcb638807d3 100644 (file)
--- a/qa/tasks/cephfs/test_snapshots.py
+++ b/qa/tasks/cephfs/test_snapshots.py
@@ -475,7 +475,6 @@ 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):
@@ -501,7 +500,6 @@ 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