Add back deleted features to keep feature set id unchaged

sdk/src/feature_set.rs

@@ -570,6 +570,14 @@ pub mod disable_turbine_fanout_experiments {
     solana_sdk::declare_id!("Gz1aLrbeQ4Q6PTSafCZcGWZXz91yVRi7ASFzFEr1U4sa");
 }
 
+pub mod drop_merkle_shreds {
+    solana_sdk::declare_id!("84zy5N23Q9vTZuLc9h1HWUtyM9yCFV2SCmyP9W9C3yHZ");
+}
+
+pub mod keep_merkle_shreds {
+    solana_sdk::declare_id!("HyNQzc7TMNmRhpVHXqDGjpsHzeQie82mDQXSF9hj7nAH");
+}
+
 pub mod move_serialized_len_ptr_in_cpi {
     solana_sdk::declare_id!("74CoWuBmt3rUVUrCb2JiSTvh6nXyBWUsK4SaMj3CtE3T");
 }
@@ -813,6 +821,8 @@ lazy_static! {
         (commission_updates_only_allowed_in_first_half_of_epoch::id(), "validator commission updates are only allowed in the first half of an epoch #29362"),
         (enable_turbine_fanout_experiments::id(), "enable turbine fanout experiments #29393"),
         (disable_turbine_fanout_experiments::id(), "disable turbine fanout experiments #29393"),
+        (drop_merkle_shreds::id(), "drop merkle shreds #29711"),
+        (keep_merkle_shreds::id(), "keep merkle shreds #29711"),
         (move_serialized_len_ptr_in_cpi::id(), "cpi ignore serialized_len_ptr #29592"),
         (update_hashes_per_tick::id(), "Update desired hashes per tick on epoch boundary"),
         (enable_big_mod_exp_syscall::id(), "add big_mod_exp syscall #28503"),