redundant code in glance.tests.unit.utils:FakeDB.reset

glance.tests.unit.utils:FakeDB uses glance.db.simple.api

FakeDB implements reset with:

    @staticmethod
    def reset():
        simple_db.DATA = {
            'images': {},
            'members': [],
            'tags': {},
            'locations': [],
            'tasks': {},
            'task_info': {}
        }

while api already has:

def reset():
    global DATA
    DATA = {
        'images': {},
        'members': [],
        'tags': {},
        'locations': [],
        'tasks': {},
        'task_info': {}
    }

the redundant code in glance.tests.unit.utils:FakeDB.reset should be replaced with simple_db.reset()