chore: deprecate warning (#89)

Since the domain issue has been resolved upstream, the warning is no longer required.

README.md

@@ -6,11 +6,6 @@ We are modernizing our data management at the Public Health Agency of Canada (PH
 
 ## Domains
 
-> [!IMPORTANT]
-> Due an upstream issue, none of the subdomains on `phac-aspc.gc.ca` will resolve correctly in the PHAC office network. If you have users accessing your service from an on-prem environment, we recommend that you consider using one of the unilingual domains.
->
-> This admonition will be removed once the issue is fixed.
-
 The current domains we have control over are below:
 
 ### Alpha: ​​