remove unused BenchmarkSetupHandler trait

pallets/distance/src/mock.rs

pallets/duniter-wot/src/mock.rs

pallets/identity/src/lib.rs

pallets/identity/src/mock.rs

pallets/identity/src/traits.rs

pallets/quota/src/mock.rs

runtime/common/src/pallets_config.rs

runtime/common/src/providers.rs