You would first have to put the tenant on proper written notice of the code violation, breach of the lease, or breach of the landlord tenant statutes, some or all of which might apply. You would include the appropriate time limit to cure or vacate (per statute) in that notice.
If the condition isn't cured by the deadline the tenancy is terminated and you file for eviction through the courts. If there is anything left behind when the tenant leaves or is put out, you'll be authorized to dispose of it.
Everything you need to know about the process is in the statutes: