Remove the get_item method

The method of get_item is not used, IMO, we should remove it

Change-Id: I4894eec5bddc76126845ed3e21836168554d6ab5

manila_ui/utils/filters.py

@@ -1,21 +0,0 @@
-# Copyright 2012 Nebula, Inc.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-
-from django.template.defaultfilters import register
-
-
-@register.filter
-def get_item(dictionary, key):
-    return dictionary.get(key)