manipulate slots

src/main/resources/templates/template.html

@@ -23,7 +23,6 @@
 		<div class="collapse navbar-collapse" id="navbarSupportedContent" style="margin-right: 20px">
 			<ul class="navbar-nav mb-2 mb-lg-0">
 				<li class="nav-item"><a class="btn btn-outline-secondary" th:href="@{/}">Startseite</a></li>
-				<li class="nav-item"><a class="btn btn-outline-secondary" th:href="@{/sheet}">Übersicht</a></li>
 			</ul>
 			<ul layout:fragment="header"></ul>
 			<ul class="nav navbar-nav ms-auto">