[FilesApp] Show team drive modification time in the file list

DriveFs shipped and it reports Team Drive modification time: show that
time in the file list.

Bug: 867153
Change-Id: I8569e90687ef22f6d67ef8ae032aa80d21acb09d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1660302Reviewed-by: Sam McNally <sammc@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#669910}

ui/file_manager/file_manager/foreground/js/ui/file_table.js

@@ -1043,13 +1043,6 @@ class FileTable extends cr.ui.Table {
    * @private
    */
   updateDate_(div, entry) {
-    // For now, Team Drive roots have the incorrect modified date value. Hide it
-    // until we get the proper one (see https://crbug.com/861622).
-    if (util.isTeamDriveRoot(entry)) {
-      div.textContent = '--';
-      return;
-    }
-
     const item = this.metadataModel_.getCache(
         [entry], ['modificationTime', 'modificationByMeTime'])[0];
     const modTime = this.useModificationByMeTime_ ?