The move was made in order to maintain the minimum number of directors required by Avon, and Ross is expected to step down once the company finds a new, independent director.
Ms Sturgeon said the quantity alcohol discount ban was a step in the right direction, but was designed to operate in tandem with minimum drink pricing, which the Scottish government now had the votes to pass.
It recommended that the federal OSHA be given authority to step in and take over some inspections when a state plan isn't meeting minimum requirements.