reverse code cleanup: _is_root attribute was not used
reverse code cleanup: _is_root attribute was not used

boltnev/iktomi,SmartTeleMax/iktomi,oas89/iktomi,boltnev/iktomi,Lehych/iktomi,SmartTeleMax/iktomi,SmartTeleMax/iktomi,oas89/iktomi,SlivTime/iktomi,Lehych/iktomi,oas89/iktomi,boltnev/iktomi,SlivTime/iktomi,Lehych/iktomi,SlivTime/iktomi