update

README.md

@@ -92,32 +92,6 @@ To start the development chain with detailed logging, run the following command:
 RUST_BACKTRACE=1 ./target/release/node-template -ldebug --dev
 ```
 
-Development chains:
-
-- Maintain state in a `tmp` folder while the node is running.
-- Use the **Alice** and **Bob** accounts as default validator authorities.
-- Use the **Alice** account as the default `sudo` account.
-- Are preconfigured with a genesis state (`/node/src/chain_spec.rs`) that
-  includes several prefunded development accounts.
-
-To persist chain state between runs, specify a base path by running a command
-similar to the following:
-
-```sh
-// Create a folder to use as the db base path
-$ mkdir my-chain-state
-
-// Use of that folder to store the chain state
-$ ./target/release/node-template --dev --base-path ./my-chain-state/
-
-// Check the folder structure created inside the base path after running the chain
-$ ls ./my-chain-state
-chains
-$ ls ./my-chain-state/chains/
-dev
-$ ls ./my-chain-state/chains/dev
-db keystore network
-```