Public Servant Retirement Protection Act - Amends title II (Old Age, Survivors and Disability Insurance) of the Social Security Act (SSA) to repeal the current windfall elimination provisions (which reduce Social Security benefits of retirees who paid into the Social Security system for part of their careers and who also receive a government pension from work in the public sector not covered by Social Security) and to replace them with a formula that treats non-Social Security earnings as if they were Social Security earnings for the purpose of calculating lifetime earnings for certain individuals.