remove disable-runtime-api (#1328)

polkadot/runtime/rococo/Cargo.toml

@@ -282,12 +282,6 @@ try-runtime = [
 	"runtime-parachains/try-runtime",
 	"sp-runtime/try-runtime",
 ]
-# When enabled, the runtime API will not be build.
-#
-# This is required by Cumulus to access certain types of the
-# runtime without clashing with the runtime API exported functions
-# in WASM.
-disable-runtime-api = []
 
 # Set timing constants (e.g. session period) to faster versions to speed up testing.
 fast-runtime = []

polkadot/runtime/rococo/src/lib.rs

@@ -116,10 +116,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	authoring_version: 0,
 	spec_version: 9430,
 	impl_version: 0,
-	#[cfg(not(feature = "disable-runtime-api"))]
 	apis: RUNTIME_API_VERSIONS,
-	#[cfg(feature = "disable-runtime-api")]
-	apis: sp_version::create_apis_vec![[]],
 	transaction_version: 22,
 	state_version: 1,
 };
@@ -1647,7 +1644,6 @@ mod benches {
 	);
 }
 
-#[cfg(not(feature = "disable-runtime-api"))]
 sp_api::impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
 		fn version() -> RuntimeVersion {