fix auth_test

Author: s.logvinenko

tests/auth_test.py

@@ -5,7 +5,6 @@
 
 import os
 import unittest
-import tempfile
 import signal
 
 from .helpers.ptrack_helpers import ProbackupTest, ProbackupException
@@ -84,6 +83,7 @@ def setUp(self):
                     '-b', 'FULL'
                     ]
 
+    def tearDown(self):
         if "PGPASSWORD" in self.pb.test_env.keys():
             del self.pb.test_env["PGPASSWORD"]
 
@@ -95,9 +95,6 @@ def setUp(self):
         except OSError:
             pass
 
-    def tearDown(self):
-        pass
-
     def test_empty_password(self):
         """ Test case: PGPB_AUTH03 - zero password length """
         try: