[ticket/11768] Removed get_parser() / get_renderer() accessors

There's no need to access the s9e\TextFormatter objects outside of events.

PHPBB3-11768

phpBB/phpbb/textformatter/s9e/parser.php

@@ -190,16 +190,6 @@ class parser implements \phpbb\textformatter\parser_interface
 		return array_unique($errors);
 	}
 
-	/**
-	* Return the instance of s9e\TextFormatter\Parser used by this object
-	*
-	* @return \s9e\TextFormatter\Parser
-	*/
-	public function get_parser()
-	{
-		return $this->parser;
-	}
-
 	/**
 	* {@inheritdoc}
 	*/