Remove in-tree max-encoded-len and use the new SCALE codec crate instead (#9163)

* Update impl-codec to use new upstream MaxEncodedLen trait

* Adapt crates to use the updated codec crate for `MaxEncodedLen`

* Remove max-encoded-len crate altogether

* Fix test compilation in `pallet-proxy`

* reorganize import (#9186)

* Fix remaining `MaxEncodedLen` imports

* Fix remaining old usages of max-encoded-len crate

* Fix UI test

* Manually depend on new impl-codec to fix Polkadot companion build

* Use newly released primitive-types v0.9.1 that has new codec impls

* Make sure codec deps are up-to-date in crates that use them

Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>

substrate/frame/proxy/src/lib.rs

@@ -34,7 +34,7 @@ mod benchmarking;
 pub mod weights;
 
 use sp_std::{prelude::*, convert::TryInto};
-use codec::{Encode, Decode};
+use codec::{Encode, Decode, MaxEncodedLen};
 use sp_io::hashing::blake2_256;
 use sp_runtime::{
 	DispatchResult,
@@ -45,7 +45,7 @@ use frame_support::{
 		dispatch::{DispatchResultWithPostInfo, PostDispatchInfo},
 		traits::{
 			Get, ReservableCurrency, Currency, InstanceFilter, OriginTrait,
-			IsType, IsSubType, MaxEncodedLen,
+			IsType, IsSubType,
 		},
 		weights::GetDispatchInfo,
 };