diff --git a/lib/full-site-editing/template-loader.php b/lib/full-site-editing/template-loader.php
index d6551986ac23a..431ed938f9f9a 100644
--- a/lib/full-site-editing/template-loader.php
+++ b/lib/full-site-editing/template-loader.php
@@ -177,11 +177,7 @@ function gutenberg_get_the_template_html() {
 	$content = $wp_embed->autoembed( $content );
 	$content = do_blocks( $content );
 	$content = wptexturize( $content );
-	if ( function_exists( 'wp_filter_content_tags' ) ) {
-		$content = wp_filter_content_tags( $content );
-	} else {
-		$content = wp_make_content_images_responsive( $content );
-	}
+	$content = wp_filter_content_tags( $content );
 	$content = str_replace( ']]>', ']]>', $content );
 
 	// Wrap block template in .wp-site-blocks to allow for specific descendant styles
diff --git a/packages/block-library/src/template-part/index.php b/packages/block-library/src/template-part/index.php
index 4f52b0f6d1738..78b4d1fa32af9 100644
--- a/packages/block-library/src/template-part/index.php
+++ b/packages/block-library/src/template-part/index.php
@@ -91,11 +91,7 @@ function render_block_core_template_part( $attributes ) {
 	$content = wptexturize( $content );
 	$content = convert_smilies( $content );
 	$content = shortcode_unautop( $content );
-	if ( function_exists( 'wp_filter_content_tags' ) ) {
-		$content = wp_filter_content_tags( $content );
-	} else {
-		$content = wp_make_content_images_responsive( $content );
-	}
+	$content = wp_filter_content_tags( $content );
 	$content = do_shortcode( $content );
 
 	// Handle embeds for block template parts.