Remove InherentsPool and introduce non-propagateable transactions. (#2695)

* Remove InherentsPool.

* Introduce transactions that are not propagated over the network.

* Bump spec version.

* Use separate flag for propagation.

* Fix tests.

substrate/node/cli/src/service.rs

@@ -87,7 +87,6 @@ construct_service_factory! {
 					let proposer = Arc::new(substrate_basic_authorship::ProposerFactory {
 						client: service.client(),
 						transaction_pool: service.transaction_pool(),
-						inherents_pool: service.inherents_pool(),
 					});
 
 					let client = service.client();

substrate/node/runtime/src/lib.rs

@@ -59,7 +59,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	impl_name: create_runtime_str!("substrate-node"),
 	authoring_version: 10,
 	spec_version: 88,
-	impl_version: 89,
+	impl_version: 90,
 	apis: RUNTIME_API_VERSIONS,
 };