Companion for removal of execution strategies (#7443)

* Companion for removal of execution strategies

https://github.com/paritytech/substrate/pull/14387

* Fix some tests

* 🤦

* Adapt to latest changes

* Start supporting the offchain transaction pool

* Fix tests

* FMT

* Remove patches

* Update Substrate

* update lockfile for {"substrate"}

* Fix parachain upgrade smoke test

* Fix test

* Rewrite all tests to use `MockSubstemClient`

---------

Co-authored-by: parity-processbot <>

polkadot/node/test/client/src/lib.rs

@@ -75,12 +75,7 @@ impl TestClientBuilderExt for TestClientBuilder {
 			self.backend().clone(),
 			executor.clone(),
 			Default::default(),
-			ExecutionExtensions::new(
-				Default::default(),
-				None,
-				sc_offchain::OffchainDb::factory_from_backend(&*self.backend()),
-				Arc::new(executor),
-			),
+			ExecutionExtensions::new(Default::default(), Arc::new(executor)),
 		)
 		.unwrap();