fix according comments

Author: open-junius

runtime/src/precompiles/metagraph.rs

@@ -21,9 +21,6 @@ impl MetagraphPrecompile {
 
         match method_id {
             id if id == get_method_id("getUidCount(uint16)") => Self::get_uid_count(&method_input),
-            id if id == get_method_id("getIsSubnetRegistered(uint16)") => {
-                Self::get_is_subnet_registered(&method_input)
-            }
             id if id == get_method_id("getStake(uint16,uint16)") => Self::get_stake(&method_input),
             id if id == get_method_id("getRank(uint16,uint16)") => Self::get_rank(&method_input),
             id if id == get_method_id("getTrust(uint16,uint16)") => Self::get_trust(&method_input),
@@ -79,24 +76,6 @@ impl MetagraphPrecompile {
         })
     }
 
-    fn get_is_subnet_registered(data: &[u8]) -> PrecompileResult {
-        let netuid = Self::parse_netuid(data)?;
-        let is_registered = pallet_subtensor::Pallet::<Runtime>::if_subnet_exist(netuid);
-
-        let result_u256 = if is_registered {
-            U256::from(1)
-        } else {
-            U256::from(0)
-        };
-        let mut result = [0_u8; 32];
-        U256::to_big_endian(&result_u256, &mut result);
-
-        Ok(PrecompileOutput {
-            exit_status: ExitSucceed::Returned,
-            output: result.into(),
-        })
-    }
-
     fn get_stake(data: &[u8]) -> PrecompileResult {
         let netuid = Self::parse_netuid(data)?;
         let uid = Self::parse_uid(get_slice(data, 32, 64)?)?;

runtime/src/precompiles/mod.rs

@@ -39,7 +39,7 @@ where
     pub fn new() -> Self {
         Self(Default::default())
     }
-    pub fn used_addresses() -> [H160; 10] {
+    pub fn used_addresses() -> [H160; 11] {
         [
             hash(1),
             hash(2),
@@ -51,6 +51,7 @@ where
             hash(EDVERIFY_PRECOMPILE_INDEX),
             hash(BALANCE_TRANSFER_INDEX),
             hash(STAKING_PRECOMPILE_INDEX),
+            hash(METAGRAPH_PRECOMPILE_INDEX),
         ]
     }
 }

runtime/src/precompiles/solidity/metagraph.abi

@@ -338,25 +338,6 @@
         "stateMutability": "view",
         "type": "function"
     },
-    {
-        "inputs": [
-            {
-                "internalType": "uint16",
-                "name": "netuid",
-                "type": "uint16"
-            }
-        ],
-        "name": "getIsSubnetRegistered",
-        "outputs": [
-            {
-                "internalType": "bool",
-                "name": "",
-                "type": "bool"
-            }
-        ],
-        "stateMutability": "view",
-        "type": "function"
-    },
     {
         "inputs": [
             {

runtime/src/precompiles/solidity/metagraph.sol

@@ -19,13 +19,6 @@ interface IMetagraph {
    * @return The count of UIDs associated with the specified netuid.
    */
   function getUidCount(uint16 netuid) external view returns (uint16);
-  
-  /**
-   * @dev Checks if a subnet with the given network identifier (netuid) is registered.
-   * @param netuid The network identifier of the subnet to check.
-   * @return Returns true if the subnet is registered, false otherwise.
-   */
-  function getIsSubnetRegistered(uint16 netuid) external view returns (bool);
 
   /**
    * @dev Retrieves the stake amount associated with a given network identifier (netuid) and unique identifier (uid).