[DI] remove dead code

Author: nicolas-grekas

LazyProxy/ProxyHelper.php

@@ -62,17 +62,4 @@ public static function getTypeHint(\ReflectionFunctionAbstract $r, \ReflectionPa
             return $prefix.$parent->name;
         }
     }
-
-    private static function export($value)
-    {
-        if (!is_array($value)) {
-            return var_export($value, true);
-        }
-        $code = array();
-        foreach ($value as $k => $v) {
-            $code[] = sprintf('%s => %s', var_export($k, true), self::export($v));
-        }
-
-        return sprintf('array(%s)', implode(', ', $code));
-    }
 }