removed unused variables/constants

suspect these modules were added in initial commit after copying the
demo/example from python-ldap repository, possibly from
https://github.com/python-ldap/python-ldap/blob/master/Demo/initialize.py

These are seemingly never used, and pylint complains about them

check_syncrepl_extended

@@ -261,8 +261,6 @@ FORMAT = "%(asctime)s - %(levelname)s: %(message)s"
 if options.debug:
     logging.basicConfig(level=logging.DEBUG, format=FORMAT)
     ldap.set_option(ldap.OPT_DEBUG_LEVEL, 0)  # pylint: disable=no-member
-    ldapmodule_trace_level = 1
-    ldapmodule_trace_file = sys.stderr
 elif options.nagios:
     logging.basicConfig(level=logging.ERROR, format=FORMAT)
 elif options.quiet: