Remove Placeholder component

packages/concordia-app/src/components/Placeholder/index.jsx

@@ -1,49 +0,0 @@
-import React from 'react';
-import PropTypes from 'prop-types';
-import { List } from 'semantic-ui-react';
-import { PLACEHOLDER_TYPE_POST, PLACEHOLDER_TYPE_TOPIC } from '../../constants/PlaceholderTypes';
-
-const Placeholder = (props) => {
-  const { placeholderType, extra } = props;
-
-  switch (placeholderType) {
-    case PLACEHOLDER_TYPE_TOPIC:
-      return (
-          <>
-              <List.Header>
-                  <List.Icon name="right triangle" />
-                  topicSubject
-              </List.Header>
-              <List.Content>
-                  username
-                  Number of Replies
-                  timestamp
-              </List.Content>
-          </>
-      );
-    case PLACEHOLDER_TYPE_POST:
-      return (
-          <div>LOADING POST</div>
-      );
-    default:
-      return <div />;
-  }
-};
-
-const TopicPlaceholderExtra = PropTypes.PropTypes.shape({
-  topicId: PropTypes.number.isRequired,
-});
-
-const PostPlaceholderExtra = PropTypes.PropTypes.shape({
-  postIndex: PropTypes.number.isRequired,
-});
-
-Placeholder.propTypes = {
-  placeholderType: PropTypes.string.isRequired,
-  extra: PropTypes.oneOfType([
-    TopicPlaceholderExtra.isRequired,
-    PostPlaceholderExtra.isRequired,
-  ]),
-};
-
-export default Placeholder;