resetting 'custom' theme

src/themes/custom/app/header/header.component.html

@@ -1,25 +0,0 @@
-<header>
-    <div class="container">
-      <div class="d-flex flex-row justify-content-between">
-        <a class="navbar-brand my-2" routerLink="/home">
-          <img src="assets/images/dspace-logo.svg" [attr.alt]="'menu.header.image.logo' | translate"/>
-        </a>
-
-        <nav role="navigation" [attr.aria-label]="'nav.user.description' | translate" class="navbar navbar-light navbar-expand-md flex-shrink-0 px-0">
-          <ds-themed-search-navbar></ds-themed-search-navbar>
-          <ds-themed-lang-switch></ds-themed-lang-switch>
-          <ds-context-help-toggle></ds-context-help-toggle>
-          <ds-themed-auth-nav-menu></ds-themed-auth-nav-menu>
-          <ds-impersonate-navbar></ds-impersonate-navbar>
-          <div *ngIf="isXsOrSm$ | async" class="pl-2">
-            <button class="navbar-toggler px-0" type="button" (click)="toggleNavbar()"
-                    aria-controls="collapsingNav"
-                    aria-expanded="false" [attr.aria-label]="'nav.toggle' | translate">
-              <span class="navbar-toggler-icon fas fa-bars fa-fw" aria-hidden="true"></span>
-            </button>
-          </div>
-        </nav>
-      </div>
-    </div>
-  </header>
-

src/themes/custom/app/header/header.component.scss

@@ -1,31 +0,0 @@
-header {
-  background-color: var(--ds-header-bg);
-}
-
-.navbar-brand img {
-  max-height: var(--ds-header-logo-height);
-  max-width: 100%;
-  @media screen and (max-width: map-get($grid-breakpoints, sm)) {
-    max-height: var(--ds-header-logo-height-xs);
-  }
-}
-
-.navbar-toggler .navbar-toggler-icon {
-  background-image: none !important;
-  line-height: 1.5;
-}
-
-.navbar-toggler {
-  border: none;
-  color: var(--ds-header-icon-color);
-
-  &:hover, &:focus {
-    color: var(--ds-header-icon-color-hover);
-  }
-}
-
-.navbar {
-  display: flex;
-  gap: calc(var(--bs-spacer) / 3);
-  align-items: center;
-}

src/themes/custom/app/header/header.component.ts

@@ -6,10 +6,10 @@ import { HeaderComponent as BaseComponent } from '../../../../app/header/header.
  */
 @Component({
   selector: 'ds-header',
-  styleUrls: ['header.component.scss'],
-  // styleUrls: ['../../../../app/header/header.component.scss'],
-  templateUrl: 'header.component.html',
-  // templateUrl: '../../../../app/header/header.component.html',
+  // styleUrls: ['header.component.scss'],
+  styleUrls: ['../../../../app/header/header.component.scss'],
+  // templateUrl: 'header.component.html',
+  templateUrl: '../../../../app/header/header.component.html',
 })
 export class HeaderComponent extends BaseComponent {
 }