[FrameworkBundle] Remove unused private method.

src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php

@@ -428,17 +428,6 @@ class TextDescriptor extends Descriptor
         return trim($configAsString);
     }
 
-    /**
-     * @param string $section
-     * @param string $message
-     *
-     * @return string
-     */
-    private function formatSection($section, $message)
-    {
-        return sprintf('<info>[%s]</info> %s', $section, $message);
-    }
-
     /**
      * @param callable $callable
      *