ENGCOM-5632: fix 404 url for sitemap content url #23716

 - Merge Pull Request #23716 from sunilit42/magento2:23706-sitemap-xml-content-wrong-url
 - Merged commits:
   1. 505d285
   2. a95b55a

Author: magento-engcom-team

app/code/Magento/Sitemap/Model/Sitemap.php

@@ -362,7 +362,6 @@ protected function _initSitemapItems()
                 self::OPEN_TAG_KEY => '<?xml version="1.0" encoding="UTF-8"?>' .
                     PHP_EOL .
                     '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"' .
-                    ' xmlns:content="http://www.google.com/schemas/sitemap-content/1.0"' .
                     ' xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">' .
                     PHP_EOL,
                 self::CLOSE_TAG_KEY => '</urlset>',

app/code/Magento/Sitemap/Test/Unit/Model/_files/sitemap-1-1.xml

@@ -6,7 +6,6 @@
  */
 -->
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
-        xmlns:content="http://www.google.com/schemas/sitemap-content/1.0"
         xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
     <url>
         <loc>http://store.com/category.html</loc>

app/code/Magento/Sitemap/Test/Unit/Model/_files/sitemap-1-2.xml

@@ -6,7 +6,6 @@
  */
 -->
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
-        xmlns:content="http://www.google.com/schemas/sitemap-content/1.0"
         xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
     <url>
         <loc>http://store.com/category/sub-category.html</loc>

app/code/Magento/Sitemap/Test/Unit/Model/_files/sitemap-1-3.xml

@@ -6,7 +6,6 @@
  */
 -->
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
-        xmlns:content="http://www.google.com/schemas/sitemap-content/1.0"
         xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
     <url>
         <loc>http://store.com/product.html</loc>

app/code/Magento/Sitemap/Test/Unit/Model/_files/sitemap-1-4.xml

@@ -6,7 +6,6 @@
  */
 -->
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
-        xmlns:content="http://www.google.com/schemas/sitemap-content/1.0"
         xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
     <url>
         <loc>http://store.com/product2.html</loc>

app/code/Magento/Sitemap/Test/Unit/Model/_files/sitemap-single.xml

@@ -6,7 +6,6 @@
  */
 -->
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
-        xmlns:content="http://www.google.com/schemas/sitemap-content/1.0"
         xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
     <url>
         <loc>http://store.com/category.html</loc>