removed obsolete code

src/Symfony/Component/HttpKernel/Kernel.php

@@ -827,7 +827,6 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
 
         $output .= $rawChunk;
 
-        // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
         unset($tokens, $rawChunk);
         gc_mem_caches();
 

src/Symfony/Component/Routing/Loader/AnnotationFileLoader.php

@@ -60,7 +60,6 @@ class AnnotationFileLoader extends FileLoader
             $collection->addCollection($this->loader->load($class, $type));
         }
 
-        // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
         gc_mem_caches();
 
         return $collection;

src/Symfony/Component/Translation/Extractor/PhpExtractor.php

@@ -83,7 +83,6 @@ class PhpExtractor extends AbstractFileExtractor implements ExtractorInterface
         foreach ($files as $file) {
             $this->parseTokens(token_get_all(file_get_contents($file)), $catalog);
 
-            // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
             gc_mem_caches();
         }
     }