Remove parsing of allocation stats from responses to INFO.

The allocation stats section was most likely something available in
betas of some older release of Redis, it is not even reported on the
official documentation.

lib/Predis/Command/ServerInfo.php

@@ -55,11 +55,7 @@ class ServerInfo extends Command
     {
         list($k, $v) = explode(':', $row, 2);
 
-        if (!preg_match('/^db\d+$/', $k)) {
-            if ($k === 'allocation_stats') {
-                $v = $this->parseAllocationStats($v);
-            }
-        } else {
+        if (preg_match('/^db\d+$/', $k)) {
             $v = $this->parseDatabaseStats($v);
         }