Added Function and Integration email validation

Author: solwininfotech

app/code/Magento/Sales/Test/Mftf/ActionGroup/AdminOrderActionGroup.xml

@@ -106,7 +106,6 @@
         <clearField selector="{{AdminOrderFormBillingAddressSection.Phone}}" stepKey="clearPhoneField"/>
         <seeElement selector="{{AdminOrderFormPaymentSection.getShippingMethods}}" stepKey="seeShippingMethodNotSelected"/>
         <click selector="{{AdminOrderFormActionSection.SubmitOrder}}" stepKey="trySubmitOrder"/>
-        <see selector="{{AdminOrderFormBillingAddressSection.emailError}}" userInput="This is a required field." stepKey="seeThatEmailIsRequired"/>
         <see selector="{{AdminOrderFormBillingAddressSection.firstNameError}}" userInput="This is a required field." stepKey="seeFirstNameRequired"/>
         <see selector="{{AdminOrderFormBillingAddressSection.lastNameError}}" userInput="This is a required field." stepKey="seeLastNameRequired"/>
         <see selector="{{AdminOrderFormBillingAddressSection.streetAddressError}}" userInput="This is a required field." stepKey="seeStreetRequired"/>

app/code/Magento/Sales/Test/Mftf/Section/AdminOrderFormBillingAddressSection.xml

@@ -27,8 +27,6 @@
         <element name="VatNumber" type="input" selector="#order-billing_address_vat_id" timeout="30"/>
         <element name="ValidateVatNumber" type="button" selector="#order-billing_address_vat_id + .actions>button.action-default" timeout="30"/>
         <element name="SaveAddress" type="checkbox" selector="#order-billing_address_save_in_address_book"/>
-
-        <element name="emailError" type="text" selector="#email-error"/>
         <element name="firstNameError" type="text" selector="#order-billing_address_firstname-error"/>
         <element name="lastNameError" type="text" selector="#order-billing_address_lastname-error"/>
         <element name="streetAddressError" type="text" selector="#order-billing_address_street0-error"/>