Remove unused TagPanelButtons

This isn't used, and is just confusing. The feedback dialog is still used by the top left menu.

src/components/structures/TagPanelButtons.js

@@ -1,59 +0,0 @@
-/*
-Copyright 2019 New Vector Ltd.
-
-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.
-*/
-
-import React from 'react';
-import createReactClass from 'create-react-class';
-import * as sdk from '../../index';
-import dis from '../../dispatcher/dispatcher';
-import Modal from '../../Modal';
-import { _t } from '../../languageHandler';
-
-const TagPanelButtons = createReactClass({
-    displayName: 'TagPanelButtons',
-
-
-    componentDidMount: function() {
-        this._dispatcherRef = dis.register(this._onAction);
-    },
-
-    componentWillUnmount() {
-        if (this._dispatcherRef) {
-            dis.unregister(this._dispatcherRef);
-            this._dispatcherRef = null;
-        }
-    },
-
-    _onAction(payload) {
-        if (payload.action === "show_redesign_feedback_dialog") {
-            const RedesignFeedbackDialog =
-                sdk.getComponent("views.dialogs.RedesignFeedbackDialog");
-            Modal.createTrackedDialog('Report bugs & give feedback', '', RedesignFeedbackDialog);
-        }
-    },
-
-    render() {
-        const GroupsButton = sdk.getComponent('elements.GroupsButton');
-        const ActionButton = sdk.getComponent("elements.ActionButton");
-
-        return (<div className="mx_TagPanelButtons">
-            <GroupsButton />
-            <ActionButton
-                className="mx_TagPanelButtons_report" action="show_redesign_feedback_dialog"
-                label={_t("Report bugs & give feedback")} tooltip={true} />
-        </div>);
-    },
-});
-export default TagPanelButtons;