[llvm] Revert "workflows: Use main-branch-only environment when using ISSUE_SUBSCRIBER_TOKEN (#179990)" (PR #181352)

[Aiden Grossman via llvm-commits]

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@@ -45,7 +45,6 @@ jobs:
 
   notify-audit-failed:
     name: "Notify Audit Failed"
-    environment: main-branch-only
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boomanaiden154 wrote:

Ah, makes sense. Taking it out sounds good to me then.

https://github.com/llvm/llvm-project/pull/181352