Moved misplaced import in backends init

import datetime

import time

from django.db.utils import DatabaseError, ProgrammingError

try:

    from django.utils.six.moves import _thread as thread

except ImportError:

from django.db.backends.signals import connection_created

from django.db.backends import utils

from django.db.transaction import TransactionManagementError

from django.db.utils import DatabaseErrorWrapper

from django.db.utils import DatabaseError, DatabaseErrorWrapper, ProgrammingError

from django.utils.functional import cached_property

from django.utils import six

from django.utils import timezone