Remove global silencing of unused module warnings

[ebresafegaga]

This PR removes the global flag to silence unused modules warnings, and removes the unused modules.

Closes #11049.

[Firobe]

The warning seems to be triggered in more parts of the codebase than what you changed (see the CI) :)

[kantp]

This is currently blocked on the version compatibility changes check, see discussion in #11629

[mrmr1993]

This is out of date, and will need to be redone. Closing.