[llvm] [Github] Only delete branches seen previously in pruning workflow (PR #181430)

[Aiden Grossman via llvm-commits]

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@@ -2,9 +2,14 @@
 import sys
 import os
 import logging
+import zipfile
+import io
+import urllib.request
 
 import github
 
+GITHUB_WORKFLOW_ID = 57373867111
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boomanaiden154 wrote:

No. It's findable by using the Github API to look at the details of any workflow run for this workflow, which is public. It is left over from experimenting though and unused, so removed.

https://github.com/llvm/llvm-project/pull/181430