diff --git a/tests/phpunit/tests/block-template-utils.php b/tests/phpunit/tests/block-template-utils.php
index b06e931529f1e..814e1ee8511ed 100644
--- a/tests/phpunit/tests/block-template-utils.php
+++ b/tests/phpunit/tests/block-template-utils.php
@@ -161,64 +161,6 @@ public function test_build_block_template_result_from_file() {
 		$this->assertEmpty( $template_part->modified );
 	}
 
-	/**
-	 * @ticket 59325
-	 *
-	 * @covers ::_build_block_template_result_from_file
-	 *
-	 * @dataProvider data_build_block_template_result_from_file_injects_theme_attribute
-	 *
-	 * @param string $filename The template's filename.
-	 * @param string $expected The expected block markup.
-	 */
-	public function test_build_block_template_result_from_file_injects_theme_attribute( $filename, $expected ) {
-		$template = _build_block_template_result_from_file(
-			array(
-				'slug' => 'single',
-				'path' => DIR_TESTDATA . "/templates/$filename",
-			),
-			'wp_template'
-		);
-		$this->assertSame( $expected, $template->content );
-	}
-
-	/**
-	 * Data provider.
-	 *
-	 * @return array[]
-	 */
-	public function data_build_block_template_result_from_file_injects_theme_attribute() {
-		$theme = 'block-theme';
-		return array(
-			'a template with a template part block'  => array(
-				'filename' => 'template-with-template-part.html',
-				'expected' => sprintf(
-					'<!-- wp:template-part {"slug":"header","align":"full","tagName":"header","className":"site-header","theme":"%s"} /-->',
-					$theme
-				),
-			),
-			'a template with a template part block nested inside another block' => array(
-				'filename' => 'template-with-nested-template-part.html',
-				'expected' => sprintf(
-					'<!-- wp:group -->
-<!-- wp:template-part {"slug":"header","align":"full","tagName":"header","className":"site-header","theme":"%s"} /-->
-<!-- /wp:group -->',
-					$theme
-				),
-			),
-			'a template with a template part block with an existing theme attribute' => array(
-				'filename' => 'template-with-template-part-with-existing-theme-attribute.html',
-				'expected' => '<!-- wp:template-part {"slug":"header","theme":"fake-theme","align":"full","tagName":"header","className":"site-header"} /-->',
-			),
-			'a template with no template part block' => array(
-				'filename' => 'template.html',
-				'expected' => '<!-- wp:paragraph -->
-<p>Just a paragraph</p>
-<!-- /wp:paragraph -->',
-			),
-		);
-	}
-
 	/**
 	 * @ticket 59338
 	 *
diff --git a/tests/phpunit/tests/blocks/wpBlockPatternsRegistry.php b/tests/phpunit/tests/blocks/wpBlockPatternsRegistry.php
index 61298d1b164af..8eb4fce78b251 100644
--- a/tests/phpunit/tests/blocks/wpBlockPatternsRegistry.php
+++ b/tests/phpunit/tests/blocks/wpBlockPatternsRegistry.php
@@ -316,29 +316,6 @@ public function test_get_registered() {
 		$this->assertSame( $pattern_two, $pattern );
 	}
 
-	/**
-	 * Should insert a theme attribute into Template Part blocks in registered patterns.
-	 *
-	 * @ticket 59583
-	 *
-	 * @covers WP_Block_Patterns_Registry::register
-	 * @covers WP_Block_Patterns_Registry::get_all_registered
-	 */
-	public function test_get_all_registered_includes_theme_attribute() {
-		$test_pattern = array(
-			'title'   => 'Test Pattern',
-			'content' => '<!-- wp:template-part {"slug":"header","align":"full","tagName":"header","className":"site-header"} /-->',
-		);
-		$this->registry->register( 'test/pattern', $test_pattern );
-
-		$expected = sprintf(
-			'<!-- wp:template-part {"slug":"header","align":"full","tagName":"header","className":"site-header","theme":"%s"} /-->',
-			get_stylesheet()
-		);
-		$patterns = $this->registry->get_all_registered();
-		$this->assertSame( $expected, $patterns[0]['content'] );
-	}
-
 	/**
 	 * Should insert hooked blocks into registered patterns.
 	 *
@@ -391,29 +368,6 @@ public function test_get_all_registered_includes_hooked_blocks() {
 		$this->assertSame( $expected, $registered );
 	}
 
-	/**
-	 * Should insert a theme attribute into Template Part blocks in registered patterns.
-	 *
-	 * @ticket 59583
-	 *
-	 * @covers WP_Block_Patterns_Registry::register
-	 * @covers WP_Block_Patterns_Registry::get_registered
-	 */
-	public function test_get_registered_includes_theme_attribute() {
-		$test_pattern = array(
-			'title'   => 'Test Pattern',
-			'content' => '<!-- wp:template-part {"slug":"header","align":"full","tagName":"header","className":"site-header"} /-->',
-		);
-		$this->registry->register( 'test/pattern', $test_pattern );
-
-		$expected = sprintf(
-			'<!-- wp:template-part {"slug":"header","align":"full","tagName":"header","className":"site-header","theme":"%s"} /-->',
-			get_stylesheet()
-		);
-		$pattern  = $this->registry->get_registered( 'test/pattern' );
-		$this->assertSame( $expected, $pattern['content'] );
-	}
-
 	/**
 	 * Should insert hooked blocks into registered patterns.
 	 *