AC-252: Refactor core MFTF TinyMCE Section

Remove TinyMCE4 description

Author: kieuphan2406

app/code/Magento/PageBuilder/Test/Mftf/Test/AdminPageBuilderBlockRenderMediaContentTypesTest/BlockRenderBannerThroughBlockContentTypeTinyMCEWysiwygDisabledByDefaultTest.xml

@@ -12,7 +12,7 @@
             <features value="PageBuilder"/>
             <stories value="Block Content"/>
             <title value="Render Banner Through Block Content Type With TinyMCE and Wysiwyg Disabled By Default"/>
-            <description value="Verify that users are able to successfully render and use the Banner content type through the Block content type with TinyMCE4 and Wysiwyg Disabled By Default."/>
+            <description value="Verify that users are able to successfully render and use the Banner content type through the Block content type with TinyMCE and Wysiwyg Disabled By Default."/>
             <severity value="AVERAGE"/>
             <testCaseId value="MC-15193"/>
             <useCaseId value="MC-13769"/>