ENGCOM-3538: [Forwardport] local themes should be added to git repo #19350

 - Merge Pull Request #19350 from torhoehn/magento2:feature/up-port-pull-18960
 - Merged commits:
   1. adb97a3

Author: magento-engcom-team

.gitignore

@@ -33,7 +33,6 @@ atlassian*
 /.php_cs
 /.php_cs.cache
 /grunt-config.json
-/dev/tools/grunt/configs/local-themes.js
 /pub/media/*.*
 !/pub/media/.htaccess
 /pub/media/attribute/*