4N - ORDINANCE RELATING TO ZONING; CREATING SECTION 33-107.1 OF THE CODE OF MIAMI-DADE COUNTY, FLORIDA; PROVIDING FOR VARIANCE OF COUNTY SPACING AND HEIGHT REQUIREMENTS FOR CLASS C SIGNS UNDER CERTAIN CIRCUMSTANCES RELATING TO MUNICIPAL ANNEXATION AND INCORPORATION APPLICATIONS; APPROVING THE FORM OF APPLICATION; PROVIDING FOR CONTINGENT EFFECTIVE DATE; PROVIDING SEVERABILITY, INCLUSION IN AND EXCLUSION FROM THE CODE, AND AN EFFECTIVE DATE [SEE AGENDA ITEM NO. 11A7]