Fixup some wrong dependencies (#12899)

* Fixup some wrong dependencies

Dev dependencies should not appear in the feature list. If features are required, they should be
directly enabled for the `dev-dependency`.

* More fixups

* Fix fix

* Remove deprecated feature

* Make all work properly and nice!!

* FMT

* Fix formatting

substrate/primitives/staking/src/lib.rs

@@ -190,3 +190,5 @@ pub trait StakingInterface {
 	#[cfg(feature = "runtime-benchmarks")]
 	fn set_current_era(era: EraIndex);
 }
+
+sp_core::generate_feature_enabled_macro!(runtime_benchmarks_enabled, feature = "runtime-benchmarks", $);