chore(kad): remove deprecated symbols

Pull-Request: #4733.

protocols/kad/CHANGELOG.md

@@ -6,6 +6,9 @@
   See [PR 4503](https://github.com/libp2p/rust-libp2p/pull/4503).
 - Make previously "deprecated" `record` module private.
   See [PR 4035](https://github.com/libp2p/rust-libp2p/pull/4035).
+- Remove previously deprecated type-aliases.
+  Users should follow the convention of importing the `libp2p::kad` module and referring to symbols as `kad::Behaviour` etc.
+  See [PR 4733](https://github.com/libp2p/rust-libp2p/pull/4733). 
 
 ## 0.44.6
 

protocols/kad/src/lib.rs

@@ -106,30 +106,3 @@ pub const PROTOCOL_NAME: StreamProtocol = protocol::DEFAULT_PROTO_NAME;
 /// Constant shared across tests for the [`Multihash`](libp2p_core::multihash::Multihash) type.
 #[cfg(test)]
 const SHA_256_MH: u64 = 0x12;
-
-#[deprecated(note = "Import the `kad` module instead and refer to this type as `kad::Behaviour`.")]
-pub type Kademlia<TStore> = Behaviour<TStore>;
-
-#[deprecated(
-    note = "Import the `kad` module instead and refer to this type as `kad::BucketInserts`."
-)]
-pub type KademliaBucketInserts = BucketInserts;
-
-#[deprecated(
-    note = "Import the `kad` module instead and refer to this type as `kad::StoreInserts`."
-)]
-pub type KademliaStoreInserts = StoreInserts;
-
-#[deprecated(note = "Import the `kad` module instead and refer to this type as `kad::Config`.")]
-pub type KademliaConfig = Config;
-
-#[deprecated(note = "Import the `kad` module instead and refer to this type as `kad::Caching`.")]
-pub type KademliaCaching = Caching;
-
-#[deprecated(note = "Import the `kad` module instead and refer to this type as `kad::Event`.")]
-pub type KademliaEvent = Event;
-
-#[deprecated(
-    note = "Import the `kad` module instead and refer to this type as `kad::ConnectionType`."
-)]
-pub type KadConnectionType = ConnectionType;