Eight countries are removed from the list that demands a 10-day period of isolation.
The 14-year-old was reportedly called "dirty" and asked to leave the classroom.
Mohammed Hassan Mohamud, who has been a refugee in Kenya for two decades, gave an impassioned plea to the political and business elites gathered in the Swiss ski resort of Davos to do more than pay lip-service to the plight of millions of displaced people.
14 people died in Tuesday afternoon's attack.
CCTV footage has been released of the attackers at a hotel in Nairobi, Kenya. Several gunmen are seen entering the complex, where they killed at least fourteen people and injured many others. They are suspected members of the extremist group al-Shabaab.
A hotel in Nairobi, Kenya, has been attacked by the extremist group al-Shabab, killing at least one person and injuring many others. There was an explosion and heavy gunfire. Emergency services rushed to the scene to escort crowds away from the scene.
Somalia-based extremist group al-Shabab has claimed responsibility.
Sylvia Constanza Romano, 23, was seized at gunpoint on 20 November 2018. Five people were wounded by the attackers, who shot AK-47 rifles indiscriminately. The charity worker was abducted from a guesthouse in Chakama, a small town close to the south-east coast.
The youngest victim of the indiscriminate shooting was a 10-year-old boy.
48 people died in the disaster in May.