Any license issued by the city to any person to engage in, exercise, or pursue any business, profession, trade, occupation, or privilege, may be revoked by the city council after adequate opportunity for a hearing, for either of the following reasons:
A. The licensee is engaging in, exercising, or pursuing the business, profession, trade, occupation, or privilege in such a manner that he has created or is creating a public nuisance as defined by state law or local ordinance; or
B. Serious or repeated violation of the law or ordinances. (1985 Code § 9-106)