All ordinances heretofore adopted by the county board of supervisors are hereby repealed, except all ordinances or parts of ordinances relating to the following subjects and not conflicting with any of the provisions of this Code:

The issuance of corporate bonds and notes of the county of whatever name or description.

The establishment of grades, curb lines and widths of sidewalks in the public streets and alleys.

The fixing of salaries of public officials and employees.

Rights, licenses or franchises or the creation of any contract with the county.

The lighting of streets and alleys.

The naming and changing of names of streets, alleys, public grounds and parks.

The letting of contracts without bids.

Construction of any public works.

Budget ordinances, resolutions and actions.