chore: remove PolkadotJS from readme

packages/connect/README.md

@@ -1,81 +1,5 @@
 # @substrate/connect
 
-## Using `@substrate/connect` through the PolkadotJS RPC Provider
-
-The recommended way to use `@substrate/connect` is to use PolkadotJS,
-which provides a higher-level API built on top of it.
-Unless you are writting your own library, you probably want to use the
-PolkadotJS RPC provider.
-
-Provide a well-known chain name ('polkadot', 'ksmcc3', 'westend2', 'rococo_v2_2'):
-
-Note these names are the "real" names of the chains rather than the friendly 
-names (e.g. "kusama" or "rococo"). 'ksmcc3' is the name for kusama. This
-matters for chains which have been hard forked. I.e. rococo - "rococo_v2" and 
-"rococo_v2_2" are two completely unrelated chains.
-
-```js
-import { ApiPromise } from "@polkadot/api";
-import {
- ScProvider
-} from "@polkadot/rpc-provider";
-import * as Sc from "@substrate/connect";
-
-const provider = new ScProvider(Sc, Sc.WellKnownChain.polkadot);
-await provider.connect();
-const polkadotApi = await ApiPromise.create({ provider });
-await polkadotApi.rpc.chain.subscribeNewHeads((lastHeader) => {
- console.log(lastHeader.number.toString());
-});
-```
-
-...or provide your custom Substrate chain's specification:
-
-```js
-import { ApiPromise } from "@polkadot/api";
-import { ScProvider } from "@polkadot/rpc-provider/substrate-connect";
-import * as Sc from "@substrate/connect";
-
-import myJsonSubstrateChainSpec from './mySubstrateChainSpec.json';
-
-const mySubstrateChainSpec = JSON.stringify(myJsonSubstrateChainSpec);
-const provider = new ScProvider(Sc, mySubstrateChainSpec);
-
-await provider.connect();
-
-const polkadotApi = await ApiPromise.create({ provider });
-await polkadotApi.rpc.chain.subscribeNewHeads((lastHeader) => {
- console.log(lastHeader.number.toString());
-});
-```
-
-In order to connect to a parachain, you must first instantiate the `ScProvider`
-corresponding to the relay chain, then pass this `ScProvider` as the second
-argument of the constructor of the parachain `ScProvider`. The following example
-connects to a parachain of the Westend test network:
-
-```js
-import { ApiPromise } from "@polkadot/api";
-import {
- ScProvider
-} from "@polkadot/rpc-provider";
-import * as Sc from "@substrate/connect";
-
-import jsonParachainSpec from './myParaChainSpec.json';
-
-const parachainSpec = JSON.stringify(jsonParachainSpec);
-
-const relayProvider = new ScProvider(Sc, Sc.WellKnownChain.westend2);
-const provider = new ScProvider(Sc, parachainSpec, relayProvider);
-
-await provider.connect();
-
-const polkadotApi = await ApiPromise.create({ provider });
-await polkadotApi.rpc.chain.subscribeNewHeads((lastHeader) => {
- console.log(lastHeader.number.toString());
-});
-```
-
 ## Using `@substrate/connect` for library authors
 
 Provide a well-known chain name ('polkadot', 'ksmcc3', 'westend2', 'rococo_v2_2'):