Kill the light client, CHTs and change tries. (#10080)

* Remove light client, change tries and CHTs

* Update tests

* fmt

* Restore changes_root

* Fixed benches

* Cargo fmt

* fmt

* fmt

substrate/primitives/api/proc-macro/src/impl_runtime_apis.rs

@@ -288,10 +288,6 @@ fn generate_runtime_api_base_structures() -> Result<TokenStream> {
 			fn into_storage_changes(
 				&self,
 				backend: &Self::StateBackend,
-				changes_trie_state: Option<&#crate_::ChangesTrieState<
-					#crate_::HashFor<Block>,
-					#crate_::NumberFor<Block>,
-				>>,
 				parent_hash: Block::Hash,
 			) -> std::result::Result<
 				#crate_::StorageChanges<C::StateBackend, Block>,
@@ -299,7 +295,6 @@ fn generate_runtime_api_base_structures() -> Result<TokenStream> {
 			> where Self: Sized {
 				self.changes.replace(Default::default()).into_storage_changes(
 					backend,
-					changes_trie_state,
 					parent_hash,
 					self.storage_transaction_cache.replace(Default::default()),
 				)

substrate/primitives/api/proc-macro/src/mock_impl_runtime_apis.rs

@@ -116,10 +116,6 @@ fn implement_common_api_traits(block_type: TypePath, self_ty: Type) -> Result<To
 			fn into_storage_changes(
 				&self,
 				_: &Self::StateBackend,
-				_: Option<&#crate_::ChangesTrieState<
-					#crate_::HashFor<#block_type>,
-					#crate_::NumberFor<#block_type>,
-				>>,
 				_: <#block_type as #crate_::BlockT>::Hash,
 			) -> std::result::Result<
 				#crate_::StorageChanges<Self::StateBackend, #block_type>,