chore: Remove emails blocklist

Signed-off-by: Awiteb <a@4rs.nl>

forgejo/forgejo/conf/app.ini

@@ -6,7 +6,7 @@
 ;
 ; You need to change every value that has `CHANGE_ME` comment to your own value.
 ;
-; Forgejo version: 1.21
+; Forgejo version: >7.0.0
 ; License        : MIT
 ;
 ; Copyright (c) 2024 Awiteb <a@4rs.nl>
@@ -174,7 +174,6 @@ DISABLE_REGISTRATION = false
 REQUIRE_SIGNIN_VIEW = false
 REGISTER_EMAIL_CONFIRM = false
 ALLOW_ONLY_EXTERNAL_REGISTRATION = false
-EMAIL_DOMAIN_BLOCKLIST = gmail.com,yahoo.com,icloud.com,hotmail.com
 
 ;; Captcha configuration
 ENABLE_CAPTCHA = true