TOC block: Deregister until issues are resolved (#29718)

Commented-out the lines that register the block.
Since this is only temporary, commenting-out seems appropriate.
The e2e fixtures were removed to make the tests pass.

lib/blocks.php

@@ -41,7 +41,7 @@ function gutenberg_reregister_core_block_types() {
 				'social-links',
 				'spacer',
 				'table',
-				'table-of-contents',
+				// 'table-of-contents',
 				'text-columns',
 				'verse',
 				'video',
@@ -89,7 +89,7 @@ function gutenberg_reregister_core_block_types() {
 					'site-logo.php'                 => 'core/site-logo',
 					'site-tagline.php'              => 'core/site-tagline',
 					'site-title.php'                => 'core/site-title',
-					'table-of-contents.php'         => 'core/table-of-contents',
+					// 'table-of-contents.php'         => 'core/table-of-contents',
 					'template-part.php'             => 'core/template-part',
 				)
 			),

packages/block-library/src/index.js

@@ -53,7 +53,7 @@ import * as separator from './separator';
 import * as shortcode from './shortcode';
 import * as spacer from './spacer';
 import * as table from './table';
-import * as tableOfContents from './table-of-contents';
+// import * as tableOfContents from './table-of-contents';
 import * as textColumns from './text-columns';
 import * as verse from './verse';
 import * as video from './video';
@@ -161,7 +161,7 @@ export const __experimentalGetCoreBlocks = () => [
 	socialLink,
 	spacer,
 	table,
-	tableOfContents,
+	// tableOfContents,
 	tagCloud,
 	textColumns,
 	verse,