The withdrawal means Group A will now consist of just five teams rather than six, with Tahiti being reallocated into position five, previously held by Vanuatu.
This also means that Group A will now play just two matches per day, with one team sitting out with a bye, rather than the three matches previously scheduled.
Group B remains unchanged.
Samoa is hosting the event which is being held in Apia from 5-25 August. The defending champions are New Zealand, who won the OFC U-17 Women’s Championship held in the Cook Islands last year.