EDU-8384: Remove unnecessary config

Author: EAndrosova

ModernUI/T290/CodeSnippets/Activity3_5_1_ButtonLocation/RS301000.html

@@ -23,7 +23,7 @@
         class="highlights-section">
         <field name="OrderTotal"></field>
         <field name="InvoiceNbr">
-          <qp-button config.bind="btnOpenInvoice" state.bind="OpenInvoice" 
+          <qp-button state.bind="OpenInvoice" 
 		    class="col-12"></qp-button>
         </field>
       </qp-fieldset>

ModernUI/T290/PhoneRepairShop/FrontendSources/screen/src/development/screens/RS/RS301000/RS301000.html

@@ -23,7 +23,7 @@
         class="highlights-section">
         <field name="OrderTotal"></field>
         <field name="InvoiceNbr">
-          <qp-button config.bind="btnOpenInvoice" state.bind="OpenInvoice" 
+          <qp-button state.bind="OpenInvoice" 
 		    class="col-12"></qp-button>
         </field>
       </qp-fieldset>