phpstan: remove wp-tinymce.php from explict excludePaths

Author: justlevine

tests/phpstan/base.neon

@@ -78,7 +78,6 @@ parameters:
       - ../../src/wp-includes/deprecated.php
       - ../../src/wp-includes/ms-deprecated.php
       - ../../src/wp-includes/pluggable-deprecated.php
-      - ../../src/wp-includes/js/tinymce/wp-tinymce.php
       # These files are not part of the WordPress Core codebase.
       - ../../src/wp-content
       # JavaScript/CSS/Asset files.