All general ordinances of the city, the subject matter of which is covered, contained or modified by this code, and passed prior to the adoption of this code are hereby repealed, except such as are referred to herein as being still in force or are by necessary implication herein reserved from repeal (subject to the saving clauses contained herein), from which are excluded the following ordinances which are not hereby repealed: tax levy ordinances, appropriation ordinances, ordinances relating to boundaries and annexations, franchise ordinances and other ordinances granting special rights to persons, contract ordinances and ordinances authorizing the execution of a contract or the issuance of warrants, salary ordinances, ordinances establishing, naming, or vacating streets, alleys or other public places, improvement ordinances, bond ordinances, ordinances relating to elections, ordinances relating to the transfer or acceptance of real estate by or from the city, and all special ordinances. (1961 Code)