[6.0] Fancy select field remove placeholder workaround (joomla#46246)

Author: Fedik

build/media_source/system/js/fields/joomla-field-fancy-select.w-c.es6.js

@@ -111,15 +111,6 @@ window.customElements.define('joomla-field-fancy-select', class extends HTMLElem
 
     this.isDisconnected = false;
 
-    // Add placeholder option for multiple mode,
-    // Because it not supported as parameter by Choices for <select> https://github.com/jshjohnson/Choices#placeholder
-    if (this.select.multiple && this.placeholder) {
-      const option = document.createElement('option');
-      option.setAttribute('placeholder', '');
-      option.textContent = this.placeholder;
-      this.select.appendChild(option);
-    }
-
     // Init Choices
     this.choicesInstance = new Choices(this.select, {
       placeholderValue: this.placeholder,