Update Pallet placeholder struct as per FRAME v2 (#14348)

* Update Pallet placeholder struct as per FRAME v3

* ".git/.scripts/commands/fmt/fmt.sh"

* Update lib.rs

Removed the unused import

---------

Co-authored-by: command-bot <>

substrate/utils/frame/rpc/support/src/lib.rs

@@ -94,7 +94,7 @@ use sp_storage::{StorageData, StorageKey};
 /// 	use frame_support::pallet_prelude::*;
 ///
 /// 	#[pallet::pallet]
-/// 	pub struct Pallet<T>(PhantomData<T>);
+/// 	pub struct Pallet<T>(_);
 ///
 /// 	#[pallet::config]
 /// 	pub trait Config: frame_system::Config {}