The main purpose of the Davis-Bacon Repeal Act is to eliminate the wage requirements established by the Davis-Bacon Act. This act currently mandates that workers on federal construction projects be paid at least the prevailing wage in the area where the work is being done. By repealing these wage requirements, the bill aims to change how wages are determined for these projects. Key provisions of the bill include the complete repeal of the wage requirements set forth in the Davis-Bacon Act. This means that any legal references to these wage requirements will no longer be valid.