diff --git a/src/wp-includes/rest-api/endpoints/class-wp-rest-block-directory-controller.php b/src/wp-includes/rest-api/endpoints/class-wp-rest-block-directory-controller.php
index bc81da184a..4dc0f17fbe 100644
--- a/src/wp-includes/rest-api/endpoints/class-wp-rest-block-directory-controller.php
+++ b/src/wp-includes/rest-api/endpoints/class-wp-rest-block-directory-controller.php
@@ -129,7 +129,6 @@ class WP_REST_Block_Directory_Controller extends WP_REST_Controller {
 			'author_block_count'  => intval( $plugin['author_block_count'] ),
 			'author'              => wp_strip_all_tags( $plugin['author'] ),
 			'icon'                => ( isset( $plugin['icons']['1x'] ) ? $plugin['icons']['1x'] : 'block-default' ),
-			'assets'              => array(),
 			'last_updated'        => gmdate( 'Y-m-d\TH:i:s', strtotime( $plugin['last_updated'] ) ),
 			'humanized_updated'   => sprintf(
 				/* translators: %s: Human-readable time difference. */
@@ -138,21 +137,6 @@ class WP_REST_Block_Directory_Controller extends WP_REST_Controller {
 			),
 		);
 
-		foreach ( $plugin['block_assets'] as $asset ) {
-			// Allow for fully qualified URLs in future
-			if ( 'https' === wp_parse_url( $asset, PHP_URL_SCHEME ) && ! empty( wp_parse_url( $asset, PHP_URL_HOST ) ) ) {
-				$block['assets'][] = esc_url_raw(
-					$asset,
-					array( 'https' )
-				);
-			} else {
-				$block['assets'][] = esc_url_raw(
-					add_query_arg( 'v', strtotime( $block['last_updated'] ), 'https://ps.w.org/' . $plugin['slug'] . $asset ),
-					array( 'https' )
-				);
-			}
-		}
-
 		$this->add_additional_fields_to_object( $block, $request );
 
 		$response = new WP_REST_Response( $block );
@@ -296,16 +280,6 @@ class WP_REST_Block_Directory_Controller extends WP_REST_Controller {
 					'type'        => 'string',
 					'context'     => array( 'view' ),
 				),
-				'assets'              => array(
-					'description' => __( 'An object representing the block CSS and JavaScript assets.' ),
-					'type'        => 'array',
-					'context'     => array( 'view' ),
-					'readonly'    => true,
-					'items'       => array(
-						'type'   => 'string',
-						'format' => 'uri',
-					),
-				),
 			),
 		);
 
diff --git a/tests/phpunit/tests/rest-api/rest-block-directory-controller.php b/tests/phpunit/tests/rest-api/rest-block-directory-controller.php
index cfbfff4374..ee8d21aa89 100644
--- a/tests/phpunit/tests/rest-api/rest-block-directory-controller.php
+++ b/tests/phpunit/tests/rest-api/rest-block-directory-controller.php
@@ -162,12 +162,6 @@ class WP_REST_Block_Directory_Controller_Test extends WP_Test_REST_Controller_Te
 			'author_block_count'  => 1,
 			'author'              => 'sorta brilliant',
 			'icon'                => 'https://ps.w.org/guidepost/assets/icon-128x128.jpg?rev=2235512',
-			'assets'              => array(
-				'https://ps.w.org/guidepost/tags/1.2.1/build/index.js?v=1584940380',
-				'https://ps.w.org/guidepost/tags/1.2.1/build/guidepost-editor.css?v=1584940380',
-				'https://ps.w.org/guidepost/tags/1.2.1/build/guidepost-style.css?v=1584940380',
-				'https://ps.w.org/guidepost/tags/1.2.1/build/guidepost-theme.js?v=1584940380',
-			),
 			'last_updated'        => gmdate( 'Y-m-d\TH:i:s', strtotime( $plugin['last_updated'] ) ),
 			'humanized_updated'   => sprintf( '%s ago', human_time_diff( strtotime( $plugin['last_updated'] ) ) ),
 		);
@@ -192,7 +186,7 @@ class WP_REST_Block_Directory_Controller_Test extends WP_Test_REST_Controller_Te
 
 		$properties = $data['schema']['properties'];
 
-		$this->assertCount( 14, $properties );
+		$this->assertCount( 13, $properties );
 		$this->assertArrayHasKey( 'name', $properties );
 		$this->assertArrayHasKey( 'title', $properties );
 		$this->assertArrayHasKey( 'description', $properties );
@@ -206,7 +200,6 @@ class WP_REST_Block_Directory_Controller_Test extends WP_Test_REST_Controller_Te
 		$this->assertArrayHasKey( 'icon', $properties );
 		$this->assertArrayHasKey( 'last_updated', $properties );
 		$this->assertArrayHasKey( 'humanized_updated', $properties );
-		$this->assertArrayHasKey( 'assets', $properties );
 	}
 
 	/**