remove tobago-select-one-listbox.ts

The Typescript for selectOneListbox is not loaded because there is no custom element "tobago-select-one-listbox".
Before the refactoring to work with a custom element, this Javascript should update the tobago-dataset attribute. But there is no dataset attribute on the component.

We should remove tobago-select-one-listbox.ts.
diff --git a/tobago-theme/tobago-theme-standard/src/main/npm/ts/tobago-all.ts b/tobago-theme/tobago-theme-standard/src/main/npm/ts/tobago-all.ts
index 883c288..c5071cc 100644
--- a/tobago-theme/tobago-theme-standard/src/main/npm/ts/tobago-all.ts
+++ b/tobago-theme/tobago-theme-standard/src/main/npm/ts/tobago-all.ts
@@ -39,7 +39,6 @@
 import "./tobago-select-boolean-toggle";
 import "./tobago-select-many-checkbox";
 import "./tobago-select-many-shuttle";
-import "./tobago-select-one-listbox";
 import "./tobago-select-one-radio";
 import "./tobago-sheet";
 import "./tobago-split-layout";
diff --git a/tobago-theme/tobago-theme-standard/src/main/npm/ts/tobago-select-one-listbox.ts b/tobago-theme/tobago-theme-standard/src/main/npm/ts/tobago-select-one-listbox.ts
deleted file mode 100644
index a3232b6..0000000
--- a/tobago-theme/tobago-theme-standard/src/main/npm/ts/tobago-select-one-listbox.ts
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import {DomUtils} from "./tobago-utils";
-
-class SelectOneListbox extends HTMLElement {
-
-  private oldSelectedIndex: number = -1;
-
-  constructor() {
-    super();
-  }
-
-  connectedCallback(): void {
-    if (!this.select.required) {
-      this.select.addEventListener("click", this.clickSelection.bind(this));
-      this.select.addEventListener("keyup", this.keySelection.bind(this));
-    }
-  }
-
-  private clickSelection(event: MouseEvent): void {
-    const select = event.currentTarget as HTMLSelectElement;
-    if (select.selectedIndex >= 0 && select.selectedIndex === this.oldSelectedIndex) {
-      this.revertSelection(select);
-    } else {
-      this.saveSelection(select);
-    }
-  }
-
-  private keySelection(event: KeyboardEvent): void {
-    const select = event.currentTarget as HTMLSelectElement;
-    if (event.code === "Space") {
-      if (select.selectedIndex >= 0) {
-        this.oldSelectedIndex = select.selectedIndex;
-        select.selectedIndex = -1;
-      } else {
-        select.selectedIndex = this.oldSelectedIndex;
-      }
-    } else {
-      this.saveSelection(select);
-    }
-  }
-
-  private revertSelection(select: HTMLSelectElement): void {
-    if (select.selectedIndex > -1) {
-      this.oldSelectedIndex = select.selectedIndex;
-      select.selectedIndex = -1;
-    } else {
-      select.selectedIndex = this.oldSelectedIndex;
-      this.oldSelectedIndex = -1;
-    }
-  }
-
-  private saveSelection(select: HTMLSelectElement): void {
-    this.oldSelectedIndex = select.selectedIndex;
-  }
-
-  get select(): HTMLSelectElement {
-    const rootNode = this.getRootNode() as ShadowRoot | Document;
-    return rootNode.getElementById(this.id + DomUtils.SUB_COMPONENT_SEP + "field") as HTMLSelectElement;
-  }
-}
-
-document.addEventListener("DOMContentLoaded", function (event: Event): void {
-  window.customElements.define("tobago-select-one-listbox", SelectOneListbox);
-});