Un-deprecate ValidateUnsigned (#5003)

* Un-deprecate ValidateUnsigned.

* Bump runtime.

* Bump runtime.

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/primitives/runtime/src/traits.rs

@@ -889,7 +889,6 @@ pub trait Applyable: Sized + Send + Sync {
 	fn sender(&self) -> Option<&Self::AccountId>;
 
 	/// Checks to see if this is a valid *transaction*. It returns information on it if so.
-	#[allow(deprecated)] // Allow ValidateUnsigned
 	fn validate<V: ValidateUnsigned<Call=Self::Call>>(
 		&self,
 		info: Self::DispatchInfo,
@@ -898,7 +897,6 @@ pub trait Applyable: Sized + Send + Sync {
 
 	/// Executes all necessary logic needed prior to dispatch and deconstructs into function call,
 	/// index and sender.
-	#[allow(deprecated)] // Allow ValidateUnsigned
 	fn apply<V: ValidateUnsigned<Call=Self::Call>>(
 		self,
 		info: Self::DispatchInfo,
@@ -924,7 +922,6 @@ pub trait GetNodeBlockType {
 /// the transaction for the transaction pool.
 /// During block execution phase one need to perform the same checks anyway,
 /// since this function is not being called.
-#[deprecated(note = "Use SignedExtensions instead.")]
 pub trait ValidateUnsigned {
 	/// The call to validate
 	type Call;