make min burn only callable by root

Author: camfairchild

pallets/admin-utils/src/lib.rs

@@ -554,7 +554,7 @@ pub mod pallet {
         }
 
         /// The extrinsic sets the minimum burn for a subnet.
-        /// It is only callable by the root account or subnet owner.
+        /// It is only callable by the root account.
         /// The extrinsic will call the Subtensor pallet to set the minimum burn.
         #[pallet::call_index(22)]
         #[pallet::weight(<T as Config>::WeightInfo::sudo_set_min_burn())]
@@ -563,7 +563,7 @@ pub mod pallet {
             netuid: u16,
             min_burn: u64,
         ) -> DispatchResult {
-            pallet_subtensor::Pallet::<T>::ensure_subnet_owner_or_root(origin, netuid)?;
+            ensure_root(origin)?;
 
             ensure!(
                 pallet_subtensor::Pallet::<T>::if_subnet_exist(netuid),