If any section, subsection, sentence, clause or phrase of §§ 155.490 through 155.500 is for any reason held to be invalid, such invalidity shall not affect the validity or enforceability of the remaining portions of §§ 155.490 through 155.500. The City Council hereby declares that it would have adopted §§ 155.490 through 155.500 irrespective of the fact that any one or more sections, subsections, sentences, clauses, or phrases be declared invalid.