Remove the blue square preceding announcements

Removed the blue square element from the AnnouncementCard component in the client.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: e437ffed-c31b-44eb-9fd5-b6f9faa8e7ce
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/e437ffed-c31b-44eb-9fd5-b6f9faa8e7ce/eKY7rVw

client/src/components/AnnouncementCard.tsx

@@ -315,7 +315,6 @@ export default function AnnouncementCard() {
               return (
                 <div key={announcement.id} className="flex items-start justify-between p-4 bg-gray-50 hover:bg-gray-100 transition-colors border-l-3 border-blue-500">
                   <div className="flex items-start space-x-3 flex-1 min-w-0">
-                    <div className="h-2 w-2 bg-blue-500 mt-2 flex-shrink-0"></div>
                     <div className="min-w-0 flex-1">
                       <div className="flex items-center gap-2 mb-1">
                         <priorityConfig.icon className={`h-4 w-4 ${priorityConfig.iconColor}`} />