Remove non-functional search icon from dashboard header

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

omsorgapp/src/components/Header.jsx

@@ -1,4 +1,4 @@
-import { Bell, LogOut, Search, UserCircle2 } from "lucide-react";
+import { Bell, LogOut, UserCircle2 } from "lucide-react";
 import { useAuth } from "../app/AuthContext";
 
 export default function Header() {
@@ -19,10 +19,6 @@ export default function Header() {
 
       <div className="header-right">
 
-        <button className="icon-button">
-          <Search size={20} />
-        </button>
-
         <button className="icon-button notification">
 
           <Bell size={20} />