OGP向けにインスタンスのバナー画像を提供するように

src/client/app/base.pug

@@ -1,45 +0,0 @@
-block vars
-
-doctype html
-
-!= '\n<!-- Thank you for using Misskey! @syuilo -->\n'
-
-html
-
-	head
-		meta(charset='utf-8')
-		meta(name='application-name' content='Misskey')
-		meta(name='theme-color' content=themeColor)
-		meta(name='referrer' content='origin')
-		meta(property='og:site_name' content='Misskey')
-		link(rel='manifest' href='/manifest.json')
-
-		title
-			block title
-				| Misskey
-
-		block desc
-			meta(name='description' content='A planet of fediverse')
-
-		block meta
-
-		style
-			include ./../../../built/client/assets/init.css
-		script
-			include ./../../../built/client/assets/boot.js
-
-		script
-			include ./../../../built/client/assets/safe.js
-
-		//- FontAwesome style
-		style #{facss}
-
-	body
-		noscript: p
-			| JavaScriptを有効にしてください
-			br
-			| Please turn on your JavaScript
-		div#ini.
-			<svg viewBox="0 0 50 50">
-				<path fill=#{themeColor} d="M25.251,6.461c-10.318,0-18.683,8.365-18.683,18.683h4.068c0-8.071,6.543-14.615,14.615-14.615V6.461z" />
-			</svg>