Remove "Back to Blog" button from post header

The "Back to Blog" button, a link to the main blog page, has been removed from the post header component in the marketing blog module. This changes the page navigation and streamlines the post header design, making it cleaner and less cluttered.

apps/web/app/(marketing)/blog/_components/post-header.tsx

@@ -18,18 +18,6 @@ export const PostHeader: React.FC<{
 
   return (
     <div className={'flex flex-col'}>
-      <div className={'container'}>
-        <Link href={'/blog'}>
-          <Button variant={'link'}>
-            <ArrowLeft className={'h-4'} />
-
-            <span>
-              <Trans i18nKey={'marketing:backToBlog'} />
-            </span>
-          </Button>
-        </Link>
-      </div>
-
       <div className={cn('border-b py-8')}>
         <div className={'container flex flex-col space-y-4'}>
           <h1 className={'text-3xl font-semibold xl:text-5xl'}>{title}</h1>