book: add NIP05 & NIP19 JavaScript examples

Removed nrelay example.

book/snippets/nostr/js/src/nip19.js

@@ -1,4 +1,4 @@
-const { loadWasmSync, Keys, EventBuilder, Nip19Profile, Nip19Event, Nip19Relay} = require("@rust-nostr/nostr");
+const { loadWasmSync, Keys, EventBuilder, Nip19Profile, Nip19Event} = require("@rust-nostr/nostr");
 
 function run() {
     // Load WASM
@@ -50,19 +50,6 @@ function run() {
     console.log(` Event (decoded): ${decode_nevent.eventId().toBech32()}`);
     // ANCHOR_END: nip19-nevent-decode
 
-    console.log();
-    // ANCHOR: nip19-nrelay-encode
-    // Create NIP-19 relay
-    let relay = new Nip19Relay("wss://relay.damus.io");
-    console.log(` Relay (encoded): ${relay.toBech32()}`);
-    // ANCHOR_END: nip19-nrelay-encode
-
-    // ANCHOR: nip19-nrelay-decode
-    // Decode NIP-19 relay
-    let decode_relay = Nip19Relay.fromBech32(relay.toBech32());
-    console.log(` Relay (decoded): ${decode_relay.url()}`);
-    // ANCHOR_END: nip19-nrelay-decode
-
 }
 
 module.exports.run = run;

book/src/nostr/06-nip19.md

@@ -116,16 +116,6 @@ Using the `Nip19Event` class to create a shareable `nevent` that includes author
 {{#include ../../snippets/nostr/js/src/nip19.js:nip19-nevent-decode}}
 ```
 
-In addition to the above objects the `Nip19Relay` class can also be used to create a shareable `nrelay`, however it should be noted that per [NIP-19 documentation](https://github.com/nostr-protocol/nips/blob/master/19.md#shareable-identifiers-with-extra-metadata) this is now depreciated. This is followed by decoding the event object.
-
-```javascript,ignore
-{{#include ../../snippets/nostr/js/src/nip19.js:nip19-nrelay-encode}}
-```
-
-```javascript,ignore
-{{#include ../../snippets/nostr/js/src/nip19.js:nip19-nrelay-decode}}
-```
-
 </section>
 
 <div slot="title">Kotlin</div>