Should any section, paragraph, sentence, clause, phrase or word of this Code be declared invalid or unconstitutional by a court of competent jurisdiction, the invalidity or unconstitutionality shall not affect any of the remaining words, phrases, clauses, sentences, paragraphs or sections of this Code, since the same would have been enacted by the City Council without incorporation in this Code of any such invalid or unconstitutional word, phrase, clause, sentence, paragraph or section.