feat(og): migrate to co-located opengraph-image.tsx convention

apps/web/app/blog/[slug]/page.tsx

@@ -33,20 +33,11 @@ export async function generateMetadata({
       title: post.title,
       description: post.description,
       type: "article",
-      images: [
-        {
-          url: `/api/og/${slug}`,
-          width: 1200,
-          height: 630,
-          alt: post.title,
-        },
-      ],
     },
     twitter: {
       card: "summary_large_image",
       title: post.title,
       description: post.description,
-      images: [`/api/og/${slug}`],
     },
   };
 }