Remove Deprecated lints mention

[alex-semenyuk]

Noticed that after #15315 we don't show deprecated lints at all
Take to account we don't count them at total after #14948 and we don't show them after #15315 perhaps we don't need to show them as well as filters for them so make a cleanup

changelog: none

[rustbot]

r? @samueltardieu

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[samueltardieu]

r? @Alexendoo because of #15315

[flip1995]

I'd say not showing deprecated lints in the lint list is a bug, rather than a feature 🤔

[alex-semenyuk]

Make sense, we can back it. Show Total number - active and deprecated for consistency

[samueltardieu]

We should show deprecated lints so that people can see they exist(ed), but I don't think we should count them, it makes little sense to count lints that have been uplifted to rustc for example, as they aren't maintained in Clippy anymore. That was what #14948 was about.

[Alexendoo]

Ah right None was for deprecated lints, in that case I think just reverting #15315 would be fine, I don't think we need to do anything extra