Remove references to artist concerts

gazelle.sql

   KEY `PostHistory` (`Page`,`PostID`,`EditTime`)
 ) ENGINE=InnoDB CHARSET=utf8;
 
-CREATE TABLE `concerts` (
-  `ID` int(11) NOT NULL AUTO_INCREMENT,
-  `ConcertID` int(10) NOT NULL,
-  `TopicID` int(10) NOT NULL,
-  PRIMARY KEY (`ID`),
-  KEY `ConcertID` (`ConcertID`),
-  KEY `TopicID` (`TopicID`)
-) ENGINE=InnoDB CHARSET=utf8;
-
 CREATE TABLE `cover_art` (
   `ID` int(10) NOT NULL AUTO_INCREMENT,
   `GroupID` int(10) NOT NULL,

sections/artist/artist.php

       <a href="artist.php?action=revert&amp;artistid=<?=$ArtistID?>&amp;revisionid=<?=$RevisionID?>&amp;auth=<?=$LoggedUser['AuthKey']?>" class="brackets">Revert to this revision</a>
 <?  } ?>
       <a href="artist.php?id=<?=$ArtistID?>#info" class="brackets">Info</a>
-<?  if (defined('LASTFM_API_KEY')) { ?>
-      <a href="artist.php?id=<?=$ArtistID?>#concerts" class="brackets">Concerts</a>
-<?  } ?>
       <a href="artist.php?id=<?=$ArtistID?>#artistcomments" class="brackets">Comments</a>
 <?  if (check_perms('site_delete_artist') && check_perms('torrents_delete')) { ?>
       <a href="artist.php?action=delete&amp;artistid=<?=$ArtistID?>&amp;auth=<?=$LoggedUser['AuthKey']?>" class="brackets">Delete</a>
 //]]>
 </script>
 
-<? } // if $NumSimilar > 0 ?>
-<?
-if (defined('LASTFM_API_KEY')) {
-  include(SERVER_ROOT.'/sections/artist/concerts.php');
-}
+<? }
 
 // --- Comments ---
 $Pages = Format::get_pages($Page, $NumComments, TORRENT_COMMENTS_PER_PAGE, 9, '#comments');