diff --git a/hawkbit-security-core/src/main/java/org/eclipse/hawkbit/im/authentication/PermissionUtils.java b/hawkbit-security-core/src/main/java/org/eclipse/hawkbit/im/authentication/PermissionUtils.java
deleted file mode 100644
index 7fee17bea..000000000
--- a/hawkbit-security-core/src/main/java/org/eclipse/hawkbit/im/authentication/PermissionUtils.java
+++ /dev/null
@@ -1,33 +0,0 @@
-/**
- * Copyright (c) 2015 Bosch Software Innovations GmbH and others
- *
- * This program and the accompanying materials are made
- * available under the terms of the Eclipse Public License 2.0
- * which is available at https://www.eclipse.org/legal/epl-2.0/
- *
- * SPDX-License-Identifier: EPL-2.0
- */
-package org.eclipse.hawkbit.im.authentication;
-
-import java.util.List;
-import java.util.stream.Collectors;
-
-import lombok.NoArgsConstructor;
-import org.springframework.security.core.GrantedAuthority;
-import org.springframework.security.core.authority.SimpleGrantedAuthority;
-
-/**
- * Utility method for creation of <tt>GrantedAuthority</tt> collections etc.
- */
-@NoArgsConstructor(access = lombok.AccessLevel.PRIVATE)
-public final class PermissionUtils {
-
-    /**
-     * Returns all authorities.
-     *
-     * @return a list of {@link GrantedAuthority}
-     */
-    public static List<GrantedAuthority> createAllAuthorityList() {
-        return SpPermission.getAllAuthorities().stream().map(SimpleGrantedAuthority::new).collect(Collectors.toList());
-    }
-}
\ No newline at end of file