Coding Standards: Remove superfluous blank lines at the end of various files.

Note: This is enforced by WPCS 3.0.0.

Props jrf.
See #59161, #58831.

git-svn-id: https://develop.svn.wordpress.org/trunk@56536 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/media-upload.php

@@ -116,4 +116,3 @@ if ( 'type' === $tab || 'type_url' === $tab || ! array_key_exists( $tab, media_u
 	 */
 	do_action( "media_upload_{$tab}" );
 }
-

src/wp-content/themes/twentytwentytwo/index.php

@@ -2,4 +2,3 @@
 // There is nothing output here because block themes do not use php templates.
 // There is a core ticket discussing removing this requirement for block themes:
 // https://core.trac.wordpress.org/ticket/54272.
-

src/wp-includes/class-wp-image-editor.php

@@ -654,4 +654,3 @@ abstract class WP_Image_Editor {
 		return wp_get_default_extension_for_mime_type( $mime_type );
 	}
 }
-

src/wp-includes/pomo/streams.php

@@ -359,4 +359,3 @@ if ( ! class_exists( 'POMO_CachedIntFileReader', false ) ) :
 		}
 	}
 endif;
-