I am currently getting rid of lint warnings and this one bothers me right now. The bindings work correctly and cannot be removed, Android Studio thinks that they are not used:

This is correct, Dagger does not use that method in the generated code unlike @Provides. Dagger only infers UserManagerImpl needs to be bound to UserManager and generates code directly. It should be safe to suppress the warnings.

you tell the IDE to suppress when it is marked with

@Binds