update sample plugin with eslint instructions

src/main.ts

@@ -1,4 +1,4 @@
-import {App, Editor, MarkdownView, Modal, moment, Notice, Plugin} from 'obsidian';
+import {App, Editor, MarkdownView, Modal, Notice, Plugin} from 'obsidian';
 import {DEFAULT_SETTINGS, MyPluginSettings, SampleSettingTab} from "./settings";
 
 // Remember to rename these classes and interfaces!
@@ -71,7 +71,6 @@ export default class MyPlugin extends Plugin {
 	}
 
 	onunload() {
-
 	}
 
 	async loadSettings() {