Organisers described the decision as a "necessary reset to help ensure its long-term future".
The Saudi-led coalition fighting in Yemen struck a fuel depot near the Houthi-controlled capital, Sanaa.
Davis was found guilty last month over his role in the late rap superstar's death in a drive-by shooting in 1996.
Chapman, who was in his 20s, died after entering the tiger's enclosure at Yorkshire Wildlife Park.
Guilfoyle the allegations of improper conduct are "false" and being ambassador was the "honour of a lifetime".
More than 50 families call for investigation into how Vincent Chan was allowed to return to job after inquiry by nursery...
The school has faced an uproar over how it handled assault allegations brought by a woman known as Jane Doe.
