Remove not needed assignment

Signed-off-by: Michal Čihař <michal@cihar.com>
The integer value is not used as $recursive

Signed-off-by: Michal Čihař <michal@cihar.com>
Simplify code for rendering node

Signed-off-by: Michal Čihař <michal@cihar.com>
Simplify code for getting node class

Having empty class attribute does not harm anything and this makes the
code simpler.

Signed-off-by: Michal Čihař <michal@cihar.com>
Simplify code for generating separators array

Signed-off-by: Michal Čihař <michal@cihar.com>
Remove unused parameter

Signed-off-by: Michal Čihař <michal@cihar.com>
Remove not needed parsing of query

It was needed when we highlighted the SQL query in PHP, but it's not the
case anymore.

Signed-off-by: Michal Čihař <michal@cihar.com>
Remove not needed declaration

Signed-off-by: Michal Čihař <michal@cihar.com>
Remove parameters we do not use

Signed-off-by: Michal Čihař <michal@cihar.com>
Break not needed after return

Signed-off-by: Michal Čihař <michal@cihar.com>
Document possibly dead code

Signed-off-by: Michal Čihař <michal@cihar.com>
Break not needed after return

Signed-off-by: Michal Čihař <michal@cihar.com>