Remove old logos

Remove some very old and outdated logos. Update the RSS feed to use the
new logo.
Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

web/html/index.php

@@ -171,8 +171,6 @@ if (!empty($tokens[1]) && '/' . $tokens[1] == get_pkg_route()) {
 		break;
 	case "/css/archnavbar/archlogo.png":
 	case "/css/archnavbar/aurlogo.png":
-	case "/images/AUR-logo-80.png":
-	case "/images/AUR-logo.png":
 	case "/images/favicon.ico":
 	case "/images/feed-icon-14x14.png":
 	case "/images/titlelogo.png":

web/html/rss.php

@@ -32,7 +32,7 @@ $rss->link = "${protocol}://{$host}";
 $rss->syndicationURL = "{$protocol}://{$host}" . get_uri('/rss/');
 $image = new FeedImage();
 $image->title = "AUR";
-$image->url = "{$protocol}://{$host}/images/AUR-logo-80.png";
+$image->url = "{$protocol}://{$host}/css/archnavbar/aurlogo.png";
 $image->link = $rss->link;
 $image->description = "AUR Newest Packages Feed";
 $rss->image = $image;