It is hereby declared to be the intention of the City Council that the sections, divisions, paragraphs, sentences, clauses and phrases of this code and of each of the technical codes and other regulations herein adopted by reference are severable, and that if any phrase, clause, sentence, paragraph, division or section of this code or of any such technical code or other regulations shall be declared unconstitutional or invalid by the valid judgment or decree of any court of competent jurisdiction, such unconstitutionality or invalidity shall not affect any of the remaining phrases, clauses, sentences, paragraphs, divisions and sections thereof, since they would have been enacted by the City Council without the incorporation therein of any such unconstitutional or invalid phrase, clause, sentence, paragraph, division or section.