minor update

layouts/partials/head.html

@@ -12,7 +12,6 @@
 
 	{{ template "_internal/opengraph.html" . }}
 	{{ template "_internal/twitter_cards.html" . }}
-	<meta name="twitter:image" content="{{ with .Params.Image }}{{ . }}{{ else }}{{`images/Cover.jpg` | absURL}}{{ end }}">
 
 	<link rel="canonical" href="{{ .Permalink }}">
 	{{ "<!-- plugins -->" | safeHTML }}