refactor: Remove hardcoded numResults from fetch_pending_transactions…

…_besu (blockscout#10117)

* update remove fixed value

* refactor fetch_pending_transactions_besu

* add PR number and revised CHANGLOG.md

* remove change in CHANGELOG.md

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/pending_transaction.ex

@@ -60,18 +60,8 @@ defmodule EthereumJSONRPC.PendingTransaction do
   @spec fetch_pending_transactions_besu(EthereumJSONRPC.json_rpc_named_arguments()) ::
           {:ok, [Transaction.params()]} | {:error, reason :: term}
   def fetch_pending_transactions_besu(json_rpc_named_arguments) do
-    # `txpool_besuPendingTransactions` required parameter `numResults` for number of maximum pending transaction to return.
-    # 
-    # TODO: Remove fix value when hyperledger besu client change `numResults` from required to optional parameter.
-    # Current fix value set to `512` bonsai storage default value is 512.
-    # to handle pending transaction in Ethereum mainnet require more than 100000.
-    # reference:
-    # https://etherscan.io/chart/pendingtx
-    # https://besu.hyperledger.org/public-networks/reference/cli/options#bonsai-historical-block-limit
-    #
-    # https://besu.hyperledger.org/public-networks/reference/api#txpool_besupendingtransactions
     with {:ok, transactions} <-
-           %{id: 1, method: "txpool_besuPendingTransactions", params: [512]}
+           %{id: 1, method: "txpool_besuPendingTransactions", params: []}
            |> request()
            |> json_rpc(json_rpc_named_arguments) do
       transactions_params =