Revert "Fixes amnuts#43"

This reverts commit be727dd.

index.php

@@ -8,7 +8,7 @@
  * A simple but effective single-file GUI for the OPcache PHP extension.
  *
  * @author Andrew Collington, andy@amnuts.com
- * @version 2.5.1
+ * @version 2.5.0
  * @link https://github.com/amnuts/opcache-gui
  * @license MIT, http://acollington.mit-license.org/
  */
@@ -54,8 +54,6 @@
 
 class OpCacheService
 {
-    const VERSION = '2.5.1';
-
     protected $data;
     protected $options;
     protected $defaults = [
@@ -418,7 +416,7 @@ protected function compileState()
 </div>
 
 <footer>
-    <a href="https://github.com/amnuts/opcache-gui" target="_blank" title="opcache-gui (currently version <?php echo OpCacheService::VERSION; ?>) on GitHub">https://github.com/amnuts/opcache-gui - version <?php echo OpCacheService::VERSION; ?></a>
+    <a href="https://github.com/amnuts/opcache-gui" target="_blank">https://github.com/amnuts/opcache-gui</a>
 </footer>
 
 <script type="text/javascript">