Bugs and fixes description:
- 15607:
  - in lib389/suffix.py: Structurally dead code
- 15604:
  - in bug_harness.py: Null dereference
  + solved by removing the file as it is unused and outdated
    - additionally, remove the static_var decorator definition as it
      is not used anyway any more
- 15754:
  - in pwdPolicy_syntax_test.py: fix typo in identifier
  + Fix log msg in file pw.c
- 17046, 17061, 17063, 17069, 17084:
  - in backend_test and backendLegacy_test: fix use before NULL check
- 17473:
  - in lib389/__init__.py: Identical code in different branches
  + removed the wrapper altogether as we don't support Python2 any more
- replace SafeConfigParser with ConfigParser for it has been just an
  alias since Python 3.2 and will be removed in the future

https://pagure.io/389-ds-base/issue/49947

Author: mhonek

Review by: spichugi, firstyear (Thanks!)