DEV: removes chat-channel-settings-row (#19650)

This is dead code which should have been removed when `chat-settings-settings-modal` has been removed.

plugins/chat/assets/javascripts/discourse/components/chat-channel-settings-row.hbs

@@ -1,52 +0,0 @@
-<div
-  class="{{this.chatChannelClass}}
-    chat-channel-settings-row chat-channel-settings-row-{{this.channel.id}}"
->
-  <div class="chat-channel-info">
-    <div class="channel-title-container">
-      <LinkTo
-        @route="chat.channel"
-        @models={{array this.channel.id this.channel.title}}
-        class="channel-title"
-      >
-        <ChatChannelTitle @channel={{this.channel}} />
-      </LinkTo>
-    </div>
-
-    <div class="chat-channel-data">
-      {{#if this.channel.isFollowing}}
-        {{d-icon "check"}}
-        <p class="channel-joined">
-          {{i18n "chat.settings.followed"}}
-        </p>
-      {{/if}}
-
-      {{#if (and this.channel.description this.categoryChannel)}}
-        <div class="chat-channel-description">
-          •
-          {{this.channel.description}}
-        </div>
-      {{/if}}
-      <ChatChannelStatus @channel={{this.channel}} @format="short" />
-    </div>
-  </div>
-
-  <div class="btn-container">
-    {{#unless this.channel.isFollowing}}
-      <DButton
-        @class="chat-channel-preview"
-        @action={{action "previewChannel"}}
-        @disabled={{this.loading}}
-        @label="chat.settings.preview"
-      />
-    {{/unless}}
-    <ToggleChannelMembershipButton
-      @channel={{this.channel}}
-      @options={{hash
-        joinClass="btn-primary"
-        leaveClass="btn-danger"
-        labelType="short"
-      }}
-    />
-  </div>
-</div>

plugins/chat/assets/javascripts/discourse/components/chat-channel-settings-row.js

@@ -1,40 +0,0 @@
-import Component from "@ember/component";
-import discourseComputed from "discourse-common/utils/decorators";
-import I18n from "I18n";
-import { action } from "@ember/object";
-import { inject as service } from "@ember/service";
-
-const NOTIFICATION_LEVELS = [
-  { name: I18n.t("chat.notification_levels.never"), value: "never" },
-  { name: I18n.t("chat.notification_levels.mention"), value: "mention" },
-  { name: I18n.t("chat.notification_levels.always"), value: "always" },
-];
-
-const MUTED_OPTIONS = [
-  { name: I18n.t("chat.settings.muted_on"), value: true },
-  { name: I18n.t("chat.settings.muted_off"), value: false },
-];
-
-export default Component.extend({
-  channel: null,
-  loading: false,
-  showSaveSuccess: false,
-  notificationLevels: NOTIFICATION_LEVELS,
-  mutedOptions: MUTED_OPTIONS,
-  chat: service(),
-  router: service(),
-
-  didInsertElement() {
-    this._super(...arguments);
-  },
-
-  @discourseComputed("channel.chatable_type")
-  chatChannelClass(channelType) {
-    return `${channelType.toLowerCase()}-chat-channel`;
-  },
-
-  @action
-  previewChannel() {
-    this.chat.openChannel(this.channel);
-  },
-});