Remove(legacy): delete EAccelerator cache, the extension is not existing for php v7.4

See: https://github.com/eaccelerator/eaccelerator, where the following
message is shown:

> This project is deprecated and does not work with anything newer than PHP 5.3.
> Please use a recent version of PHP with OPcache instead!

Author: thePanz

CHANGELOG.md

@@ -6,6 +6,7 @@ CHANGELOG
 xx/xx/xxxx: Version 1.5.xx
 --------------------------
 
+* Remove sfEAcceleratorCache as the extension is not available on PHP v7.4 anymore.
 * Remove sfAPCCache as it uses the `apc` extension, which is not available on PHP v7.4 anymore.
   [BC-Break] Use `sfAPCUCache` class instead, available on Symfony1 v1.5.16
 

data/bin/check_configuration.php

@@ -78,7 +78,6 @@ function get_ini_path()
 
 $accelerator =
   ((function_exists('apc_store') || function_exists('apcu_store')) && ini_get('apc.enabled'))
-  || function_exists('eaccelerator_put') && ini_get('eaccelerator.enable')
   || function_exists('xcache_set');
 check($accelerator, 'A PHP accelerator is installed', 'Install a PHP accelerator like APC (highly recommended)', false);
 

lib/autoload/sfCoreAutoload.class.php

@@ -43,7 +43,6 @@ class sfCoreAutoload
         'sfsimpleautoload' => 'autoload/sfSimpleAutoload.class.php',
         'sfapcucache' => 'cache/sfAPCuCache.class.php',
         'sfcache' => 'cache/sfCache.class.php',
-        'sfeacceleratorcache' => 'cache/sfEAcceleratorCache.class.php',
         'sffilecache' => 'cache/sfFileCache.class.php',
         'sffunctioncache' => 'cache/sfFunctionCache.class.php',
         'sfmemcachecache' => 'cache/sfMemcacheCache.class.php',

lib/cache/sfEAcceleratorCache.class.php

@@ -34,7 +34,6 @@ public function getPanelContent()
             'cache' => sfConfig::get('sf_cache') ? 'on' : 'off',
             'compression' => sfConfig::get('sf_compressed') ? 'on' : 'off',
             'tokenizer' => function_exists('token_get_all') ? 'on' : 'off',
-            'eaccelerator' => extension_loaded('eaccelerator') && ini_get('eaccelerator.enable') ? 'on' : 'off',
             'apc' => extension_loaded('apc') && ini_get('apc.enabled') ? 'on' : 'off',
             'xcache' => extension_loaded('xcache') && ini_get('xcache.cacher') ? 'on' : 'off',
         );