I want to remove the domain from the HSTS Preload list.

About 3 months ago, I added https://hstspreload.appspot.com/ to the HSTS Preload list, but I want to remove it from the list because some subdomains no longer have access from Chrome.
(Non-Chrome browsers are fine)

The following warning appears:

[My Subdomain] .com is currently inaccessible because HSTS is used.Typically, network errors or unauthorized operations are temporary.You may be able to access the page again after a short period of time.

The method I've just tried is

• How to find the link to the warning statement above
• DELETE from chrome://net-internals/#hsts
• Reinstall Chrome
• Zero the max-age in the Strict-Transport-Security header on the site side
• Supports this Windows side

and so on, but none of them improved.

The environment is Windows 7 Home Premium SP1, Chrome 42, and other PCs in the same network have similar symptoms.

I thought it might be because it was in Chromium's transport_security_state_static.json, but I didn't know how to get it removed from this list.

This is not a programming question, but I appreciate your cooperation.

Addition (April 27, 2015)

I also asked Chrome's help forum and found out that the source of Chrome needs to be changed.
https://productforums.google.com/d/msg/chrome-ja/hEx02Yg5MjA/oI_6FR-5-XcJ

I created an issue for the Chromium project, and they said it would take 6 weeks for Chrome to be released in beta, and 6 weeks for it to be more stable, at least 12 weeks, so I'll wait and see.

Addition (April 28, 2015)

It seems that the issue of Chrome has been approved and will be applied from the next Chrome update.
In transport_security_state_static.json, I applied that include_subdomains should be false but it should be true direction.

Addition (August 24, 2015)

The issue of Chrome has finally been applied in the recent Chrome update.
It took about 4 months, but now the problem is solved.
Thank you for your reply.