If any section, subsection, sentence, clause, phrase or portion of this code is for any reason held to be invalid or unconstitutional by the decision of any court, such decision shall not affect the validity of the remaining portions of this code. The city council would have adopted this code and each section, subsection, sentence, clause, phrase and portion thereof, irrespective of the fact that any one or more sections, subsections, clauses, phrases or portions be invalid or unconstitutional. (Ord. Code § 12)