Comanion for substrate#11136 (#5218)

* Comanion for substrate#11136

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

* revert changes in bridge

Signed-off-by: koushiro <koushiro.cqx@gmail.com>

polkadot/node/network/availability-distribution/src/requester/fetch_task/tests.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
 
-use std::{collections::HashMap, convert::TryFrom};
+use std::collections::HashMap;
 
 use parity_scale_codec::Encode;
 

polkadot/node/network/availability-distribution/src/tests/mock.rs

@@ -16,7 +16,7 @@
 
 //! Helper functions and tools to generate mock data useful for testing this subsystem.
 
-use std::{convert::TryFrom, sync::Arc};
+use std::sync::Arc;
 
 use sp_keyring::Sr25519Keyring;
 

polkadot/node/network/availability-recovery/src/lib.rs

@@ -20,7 +20,6 @@
 
 use std::{
 	collections::{HashMap, VecDeque},
-	convert::TryFrom,
 	pin::Pin,
 	time::Duration,
 };

polkadot/node/network/availability-recovery/src/tests.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
 
-use std::{convert::TryFrom, sync::Arc, time::Duration};
+use std::{sync::Arc, time::Duration};
 
 use assert_matches::assert_matches;
 use futures::{executor, future};

polkadot/node/network/protocol/src/lib.rs

@@ -282,7 +282,6 @@ impl View {
 /// v1 protocol types.
 pub mod v1 {
 	use parity_scale_codec::{Decode, Encode};
-	use std::convert::TryFrom;
 
 	use polkadot_primitives::v2::{
 		CandidateHash, CandidateIndex, CollatorId, CollatorSignature, CompactStatement, Hash,