Remove redundant check in FileEngine

This check was added back when Cache::settings() existed and served to
invalidate cache data when duration settings change. This is no longer
the case, and this code actively thwarts PSR6 per-key TTL operation.

Fixes #12827

src/Cache/Engine/FileEngine.php

@@ -194,7 +194,7 @@ public function read($key)
         $time = time();
         $cachetime = (int)$this->_File->current();
 
-        if ($cachetime < $time || ($time + $this->_config['duration']) < $cachetime) {
+        if ($cachetime < $time) {
             if ($this->_config['lock']) {
                 $this->_File->flock(LOCK_UN);
             }