magento-test/app/code/Magento/Tax/Test/Mftf/ActionGroup/DeleteCustomerTaxClassActionGroup.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->

<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
    <actionGroup name="DeleteCustomerTaxClassActionGroup">
        <annotations>
            <description>Goes to the Admin New Tax Rule page. Deletes the provided Tax Class Name.</description>
        </annotations>
        <arguments>
            <argument name="taxClassName" type="string"/>
        </arguments>

        <!-- Go to tax rule page -->
        <amOnPage url="{{AdminNewTaxRulePage.url}}" stepKey="goToNewTaxRulePage"/>
        <waitForPageLoad stepKey="waitForTaxRatePage"/>
        <click stepKey="clickAdditionalSettings" selector="{{AdminTaxRulesSection.additionalSettings}}"/>
        <scrollTo stepKey="scrollToAdditionalSettings" selector="{{AdminTaxRulesSection.additionalSettings}}"/>
        <moveMouseOver stepKey="hoverDeleteElement" selector="{{AdminTaxRulesSection.deleteTaxClassName(taxClassName)}}"/>
        <click stepKey="deleteFirstTaxClass" selector="{{AdminTaxRulesSection.deleteTaxClass(taxClassName)}}"/>
        <waitForElementVisible selector="{{AdminTaxRulesSection.popUpDialogOK}}" stepKey="waitForElementBecomeVisible"/>
        <click stepKey="acceptPopUpDialog" selector="{{AdminTaxRulesSection.popUpDialogOK}}"/>
        <waitForPageLoad stepKey="waitForProductTaxClassDeleted"/>
    </actionGroup>
</actionGroups>