Remove empty fn prune_revoked_memberships

pallets/membership/src/lib.rs

@@ -190,9 +190,7 @@ pub mod pallet {
     impl<T: Config<I>, I: 'static> Hooks<BlockNumberFor<T>> for Pallet<T, I> {
         fn on_initialize(n: T::BlockNumber) -> Weight {
             if n > T::BlockNumber::zero() {
-                Self::expire_pending_memberships(n)
-                    + Self::expire_memberships(n)
-                    + Self::prune_revoked_memberships(n)
+                Self::expire_pending_memberships(n) + Self::expire_memberships(n)
             } else {
                 0
             }
@@ -389,11 +387,6 @@ pub mod pallet {
 
             total_weight
         }
-        fn prune_revoked_memberships(block_number: T::BlockNumber) -> Weight {
-            let total_weight: Weight = 0;
-
-            total_weight
-        }
 
         pub(super) fn is_member_inner(idty_id: &T::IdtyId) -> bool {
             Membership::<T, I>::contains_key(idty_id)