How to prevent sending Origin HTTP header in Chrome?

Situation:

1. I have a production web server, let's say https://example.com, configured with CORS with limited set of allowed origins. The set does NOT include localhost origins.
2. On localhost, developers develop a page/module/whatever that needs to call the production web server via AJAX (even during development). To do that, they run Chrome with CLI arguments --disable-web-security --user-data-dir=chromeNoCors so that Chrome would send AJAX without Origin header.
3. The problem is that only GET requests are sent without the header. POST requests still contain the header, therefore the production server compares the header value (http://localhost:5678) with allowed set of origins and forbids access to requested resource.

Question: Is it possible to somehow prevent sending of Origin HTTP header altogether?

I'm aware that there's a workaround to solve this situation by allowing "localhost" (or some specific host that developers will have to add to their /etc/hosts) to the set of allowed origins on production server but I'd like not to do this if possible.