Strip out old XCMP primitives (#823)

* WIP

* WIp

* Mostly get tests to compile

* Fix adder collator

* Remove more stuff

* Revert some changes to av store

* Fix av store tests

* Nitpicks

* Restore some things

* Small changes

* Remvoe unused error variants

polkadot/validation/src/validation_service/mod.rs

@@ -391,12 +391,11 @@ impl<C, N, P, SP> ParachainValidationInstances<C, N, P, SP> where
 			);
 
 			collation_work.then(move |result| match result {
-				Ok((collation, outgoing_targeted, parent_head, fees_charged)) => {
+				Ok((collation, parent_head, fees_charged)) => {
 					match crate::collation::produce_receipt_and_chunks(
 						authorities_num,
 						parent_head,
 						&collation.pov,
-						&outgoing_targeted,
 						fees_charged,
 						&collation.info,
 					) {
@@ -421,7 +420,6 @@ impl<C, N, P, SP> ParachainValidationInstances<C, N, P, SP> where
 								router.local_collation(
 									collation,
 									receipt,
-									outgoing_targeted,
 									(local_id, &chunks),
 								).map_err(|e| warn!(target: "validation", "Failed to send local collation: {:?}", e))
 							});