Build/Test Tools: Remove the replace:emoji-banner-text Grunt task.

The task was previously used to ensure that `/*! This file is auto-generated */` comment is not included on front end as part of the inline emoji detection script.

As the `wp-emoji-loader.js` script is now included via `file_get_contents()` and `wp_print_inline_script_tag()` instead of `grunt-include` to simplify the logic, the task does not find anything to replace and is no longer necessary.

Additionally, include a line break before the `wp-emoji-loader.js` script content for better line wrapping.

Follow-up to [48096], [50651], [52132].

See #44632, #44306, #53363.
Built from https://develop.svn.wordpress.org/trunk@52325


git-svn-id: http://core.svn.wordpress.org/trunk@51917 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/formatting.php

@@ -5787,7 +5787,7 @@ function _print_emoji_detection_script() {
 	}
 
 	wp_print_inline_script_tag(
-		sprintf( 'window._wpemojiSettings = %s;', wp_json_encode( $settings ) ) .
+		sprintf( 'window._wpemojiSettings = %s;', wp_json_encode( $settings ) ) . "\n" .
 			file_get_contents( sprintf( ABSPATH . WPINC . '/js/wp-emoji-loader' . wp_scripts_get_suffix() . '.js' ) )
 	);
 }