Why Conte di Cavour never returned to service

Why did Italy not return Conte di Cavour to service after Taranto?

The flooding and saltwater damage made repair effectively a near-total rebuild, more expensive than constructing a new battleship.

The initial ship name is corrected to Conte di Cavour, the battleship that was never restored. Flooding and saltwater damage reached machinery and hull structure so extensively that engines and major sections would need replacement. Official plans could continue to count a future repair on paper without corresponding work in the yard. Building a new battleship would have been cheaper than reconstructing Cavour around the damaged remains.